Release 1.0.4 - Updating Python, adding Prometheus Metrics

What's Changed

• Upgrade python to 3.9.15 by @pblgomez in #2
• Generate informational Prometheus metrics (version number and settings)
• Generate usage & health Prometheus metrics (number of pvcs, number of resizes, etc)
• Updating upstream universal helm chart
• Scaled down default resize percentage to 20% (down from 50%) based on feedback

New Contributors

• @pblgomez made their first contribution in #2

Full Changelog: 1.0.3...1.0.4