Add Github Worfklow coverage to update values.yaml and Chart.yaml dependency versions

[jvoravong]

Description

• Needed to fix an issue with update_instrumentation_dependencies.yaml not getting the latest version numbers properly.
• Added .github/workflows/update_chart_dependencies.yaml so we could automate updating subchart dependencies.
• Dependabot makes very similar updates compared to these, but Dependabot does not support updating dependencies like these yet.

Testing

• Was able to successfully test and validate both workflows in my forked repo.

[jvoravong]

Adding one last fix then merging this PR. Fixing an issue where the release.yaml workflow fires off when the helm chart dependency versions are updated (.github/workflows/update_chart_dependencies.yaml), making it so the release workflow only happens when the chart version is updated.