ci: release process enhancements

[psychedelicious]

Summary

• Fix naming of installer zip file

• Update RELEASE.md docs

• Add scripts/get_external_contributions.py, useful for getting all external contributions for release notes.

  Example output:

  ❯ python scripts/get_external_contributions.py --from 3.7.0 --to v4.0.0rc6 --token ***
  3e46f7a010748d7da527af3ff6d2640d8e164250: Harvester62 - translationBot(ui): update translation (Italian) (https://api.github.com/repos/invoke-ai/InvokeAI/commits/3e46f7a010748d7da527af3ff6d2640d8e164250)
  edde0fe174a593edb2225997d6ba8e28898bdcb5: Sufi2425 - translationBot(ui): update translation (Bulgarian) (https://api.github.com/repos/invoke-ai/InvokeAI/commits/edde0fe174a593edb2225997d6ba8e28898bdcb5)
  2dfa51c2e5a7bd63d7506cc2165637d092924a49: Vasyanator - translationBot(ui): update translation (Russian) (https://api.github.com/repos/invoke-ai/InvokeAI/commits/2dfa51c2e5a7bd63d7506cc2165637d092924a49)
  629ccd059e0103ecebc38a59bcec53d8eead1627: weblate - translationBot(ui): update translation files (https://api.github.com/repos/invoke-ai/InvokeAI/commits/629ccd059e0103ecebc38a59bcec53d8eead1627)
  419ce02aae7bff9e450229819960bef627ab1750: Harvester62 - translationBot(ui): update translation (Italian) (https://api.github.com/repos/invoke-ai/InvokeAI/commits/419ce02aae7bff9e450229819960bef627ab1750)
  2322d3cbbea28d0defe30a1e8603ebe70ad6e408: GGSSKK - translationBot(ui): update translation (Japanese) (https://api.github.com/repos/invoke-ai/InvokeAI/commits/2322d3cbbea28d0defe30a1e8603ebe70ad6e408)
  07c9c0b0ab4732b18b00f315b31671d54c0afb3d: Vasyanator - translationBot(ui): update translation (Russian) (https://api.github.com/repos/invoke-ai/InvokeAI/commits/07c9c0b0ab4732b18b00f315b31671d54c0afb3d)
  2af9286345f0883d524fc4e8097629fa7b690066: dunkeroni - fix: denoise mask incorectly applied after step (https://api.github.com/repos/invoke-ai/InvokeAI/commits/2af9286345f0883d524fc4e8097629fa7b690066)
  8b30cbe81e3b34a441e45f5e668ffd701c49ddd3: dunkeroni - chore: clean up old code comments (https://api.github.com/repos/invoke-ai/InvokeAI/commits/8b30cbe81e3b34a441e45f5e668ffd701c49ddd3)
  fe5fa7f8ccadcbda840eeaa0d951c01655b8f248: dunkeroni - chore: make ruff (https://api.github.com/repos/invoke-ai/InvokeAI/commits/fe5fa7f8ccadcbda840eeaa0d951c01655b8f248)
  609c2c0abff40dd2cc1ee124a6f95e0f89169869: dunkeroni - Fix: progress image preview for inpainting (https://api.github.com/repos/invoke-ai/InvokeAI/commits/609c2c0abff40dd2cc1ee124a6f95e0f89169869)
  bf852348aa993b9e2135dbf3dab742777e0e1dbd: Malrama - Update pytorch and xFormers 2.1.2 -> 2.2.1 (https://api.github.com/repos/invoke-ai/InvokeAI/commits/bf852348aa993b9e2135dbf3dab742777e0e1dbd)
  d45931a0afa145983b407a99e1c1a0aa420834ee: rohinish404 - fix(ui): localize text (https://api.github.com/repos/invoke-ai/InvokeAI/commits/d45931a0afa145983b407a99e1c1a0aa420834ee)
  dc9a9c0160348cf27d2105a4368a160eeeff04fd: rohinish404 - fix: not translated strings (https://api.github.com/repos/invoke-ai/InvokeAI/commits/dc9a9c0160348cf27d2105a4368a160eeeff04fd)
  9d30a063e7b3f0134dd7f965da6b94a5e35aafb7: rohinish404 - fix: remaining strings (https://api.github.com/repos/invoke-ai/InvokeAI/commits/9d30a063e7b3f0134dd7f965da6b94a5e35aafb7)
  c90807ba33171f4e04c46a068f7b2d0a0db9a542: Harvester62 - translationBot(ui): update translation (Italian) (https://api.github.com/repos/invoke-ai/InvokeAI/commits/c90807ba33171f4e04c46a068f7b2d0a0db9a542)
  ddf917f68c13c84d853d2caf14b8381bb51376ba: Vasyanator - translationBot(ui): update translation (Russian) (https://api.github.com/repos/invoke-ai/InvokeAI/commits/ddf917f68c13c84d853d2caf14b8381bb51376ba)
  37fd57d4d913f50bd079518fe6330a7c50a9ef2d: skunkworxdark - Update probe.py (https://api.github.com/repos/invoke-ai/InvokeAI/commits/37fd57d4d913f50bd079518fe6330a7c50a9ef2d)
  42f72b19a61c281845fba36c62701343c8397253: rohinish404 - fix localization and change in settings (https://api.github.com/repos/invoke-ai/InvokeAI/commits/42f72b19a61c281845fba36c62701343c8397253)
  3cdfc6ab16663be814a6844219513c420d8548ca: rohinish404 - fix tests (https://api.github.com/repos/invoke-ai/InvokeAI/commits/3cdfc6ab16663be814a6844219513c420d8548ca)
  83b3828b552a3100fbd4365c7f444fc31b4be592: Joe Kubler* - prioritize iterate in _get_next_node (https://api.github.com/repos/invoke-ai/InvokeAI/commits/83b3828b552a3100fbd4365c7f444fc31b4be592)
  a3f734af9abacbb2abf3977a198afdab3efea84e: Malrama - Update transformers 4.38.2 -> 4.39.1 and diffusers 0.27.0 -> 0.27.2 (https://api.github.com/repos/invoke-ai/InvokeAI/commits/a3f734af9abacbb2abf3977a198afdab3efea84e)
  171f2aa20ddfefa23c5edbeb2849c4bd601fe104: rohinish404 - fix(ui): image not getting selected (https://api.github.com/repos/invoke-ai/InvokeAI/commits/171f2aa20ddfefa23c5edbeb2849c4bd601fe104)
  0bb0e226dcec8a17e843444ad27c29b4821dad7c: Mark E. Shoulson* - Flip default ordering of workflow library; #5477 (https://api.github.com/repos/invoke-ai/InvokeAI/commits/0bb0e226dcec8a17e843444ad27c29b4821dad7c)

Related Issues / Discussions

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QA Instructions

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Merge Plan

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Checklist

• The PR has a short but descriptive title, suitable for a changelog
• Tests added / updated (if applicable) n/a
• Documentation added / updated (if applicable) n/a