update-project-version: Use sed instead of awk to convert to a markdown list

Co-authored-by: mshafer-NI <[email protected]>

Author: bkeryan

update-project-version/action.yml

@@ -47,7 +47,7 @@ runs:
     run: |
       echo "changed-files<<EOF" >> "$GITHUB_OUTPUT"
       # Prefix with "- " to generate a Markdown list.
-      git diff --name-only | awk '{ print "-", $0 }' >> "$GITHUB_OUTPUT"
+      git diff --name-only | sed -e 's/^/- /g' >> "$GITHUB_OUTPUT"
       echo "EOF" >> "$GITHUB_OUTPUT"
     shell: bash
   - name: Create pull request