Bump ASzc/change-string-case-action from 1 to 6

Bumps [ASzc/change-string-case-action](https://github.com/aszc/change-string-case-action) from 1 to 6.
- [Release notes](https://github.com/aszc/change-string-case-action/releases)
- [Commits](ASzc/change-string-case-action@v1...v6)

---
updated-dependencies:
- dependency-name: ASzc/change-string-case-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/v3-image-build.yml

@@ -65,7 +65,7 @@ jobs:
       # convert the string to lower case for SNAPSHOT build    
       - name: convert string to lowercase
         id: string
-        uses: ASzc/change-string-case-action@v1
+        uses: ASzc/change-string-case-action@v6
         with:
           string: ${{ env.tmp_version }}
 

.github/workflows/v4-docker-build.yml

@@ -56,7 +56,7 @@ jobs:
       # convert the string to lower case for SNAPSHOT build    
       - name: convert string to lowercase
         id: string
-        uses: ASzc/change-string-case-action@v1
+        uses: ASzc/change-string-case-action@v6
         with:
           string: ${{ env.tmp_version }}