Use upstream action to download releases info

.github/workflows/update-supported-enterprise-server-versions.yml

@@ -22,12 +22,9 @@ jobs:
           python-version: "3.7"
       - name: Checkout CodeQL Action
         uses: actions/checkout@v4
-      - name: Checkout Enterprise Releases
-        uses: actions/checkout@v4
-        with:
-          repository: github/enterprise-releases
-          ssh-key: ${{ secrets.ENTERPRISE_RELEASES_SSH_KEY }}
-          path: ${{ github.workspace }}/enterprise-releases/
+      - name: Get Enterprise Server Versions
+        id: get-versions
+        uses: github/enterprise-releases/actions/maintained_features@master
       - name: Update Supported Enterprise Server Versions
         run: |
           cd ./.github/workflows/update-supported-enterprise-server-versions/
@@ -37,7 +34,7 @@ jobs:
           rm --recursive "$ENTERPRISE_RELEASES_PATH"
           npm run build
         env:
-          ENTERPRISE_RELEASES_PATH: ${{ github.workspace }}/enterprise-releases/
+          MAINTAINED_RELEASES: ${{ steps.get-versions.outputs.maintained_releases }}
 
       - name: Update git config
         run: |

.github/workflows/update-supported-enterprise-server-versions/update.py

@@ -7,14 +7,12 @@ import pathlib
 import semver
 
 _API_COMPATIBILITY_PATH = pathlib.Path(__file__).absolute().parents[3] / "src" / "api-compatibility.json"
-_ENTERPRISE_RELEASES_PATH = pathlib.Path(os.environ["ENTERPRISE_RELEASES_PATH"])
-_RELEASE_FILE_PATH = _ENTERPRISE_RELEASES_PATH / "releases.json"
 _FIRST_SUPPORTED_RELEASE = semver.VersionInfo.parse("2.22.0") # Versions older than this did not include Code Scanning.
 
 def main():
 	api_compatibility_data = json.loads(_API_COMPATIBILITY_PATH.read_text())
 
-	releases = json.loads(_RELEASE_FILE_PATH.read_text())
+	releases = json.loads(os.environ["MAINTAINED_RELEASES"])
 
 	# Remove GHES version using a previous version numbering scheme.
 	if "11.10" in releases: