Migrate credits translations to IDs

[t3chguy]

For element-hq/element-web#25608

./node_modules/matrix-web-i18n/scripts/rekey.js "The <photo>default cover photo</photo> is © <author>Jesús Roncero</author> used under the terms of <terms>CC-BY-SA 4.0</terms>." "credits|default_cover_photo"
./node_modules/matrix-web-i18n/scripts/rekey.js "The <colr>twemoji-colr</colr> font is © <author>Mozilla Foundation</author> used under the terms of <terms>Apache 2.0</terms>." "credits|twemoji_colr"
./node_modules/matrix-web-i18n/scripts/rekey.js "The <twemoji>Twemoji</twemoji> emoji art is © <author>Twitter, Inc and other contributors</author> used under the terms of <terms>CC-BY 4.0</terms>." "credits|twemoji"

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This change is marked as an internal change (Task), so will not be included in the changelog.

[SimonBrandner]

Is the removal of new lines at the end of the i18n files intentional?

Otherwise LGTM

[t3chguy]

Is the removal of new lines at the end of the i18n files intentional?

Nope but these files are prettierignored which is annoying, have undone it but now instead it added more newlines to other files! 🙃