Rename release workflows to use hyphens (aws-observability#445)

*Issue #, if available:*

*Description of changes:*
Renamed workflows to use hyphens(-) instead of underscores(_). This
aligns our workflow names across all 4 ADOT repos so its easier to write
adaptable templates that reference these workflows.

By submitting this pull request, I confirm that you can use, modify,
copy, and redistribute this contribution, under the terms of your
choice.

Author: ezhang6811

.github/workflows/daily_scan.yml renamed to .github/workflows/daily-scan.yml

@@ -99,9 +99,9 @@ jobs:
           DEV_VERSION="${{ github.event.inputs.version }}.dev0"
           sed -i 's/__version__ = ".*"/__version__ = "'$DEV_VERSION'"/' aws-opentelemetry-distro/src/amazon/opentelemetry/distro/version.py
           VERSION="${{ github.event.inputs.version }}"
-          sed -i 's/python:v.*"/python:v'$VERSION'"/' .github/workflows/daily_scan.yml
+          sed -i 's/python:v.*"/python:v'$VERSION'"/' .github/workflows/daily-scan.yml
           git add aws-opentelemetry-distro/src/amazon/opentelemetry/distro/version.py
-          git add .github/workflows/daily_scan.yml
+          git add .github/workflows/daily-scan.yml
           git commit -m "Prepare main for next development cycle: Update version to $DEV_VERSION"
           git push --set-upstream origin "prepare-main-for-next-dev-cycle-${VERSION}"
 

.github/workflows/post_release_version_bump.yml renamed to .github/workflows/post-release-version-bump.yml

@@ -23,7 +23,7 @@ jobs:
       - name: Build Wheel and Image Files
         uses: ./.github/actions/artifacts_build
         with:
-          image_uri_with_tag: pr_build/${{ matrix.python-version }}
+          image_uri_with_tag: pr-build/${{ matrix.python-version }}
           push_image: false
           load_image: true
           python_version: ${{ matrix.python-version }}