Ensure changelog check does not run on main or master

Author: ArBridgeman

.github/workflows/checks.yml

@@ -46,9 +46,6 @@ jobs:
       - name: SCM Checkout
         uses: actions/checkout@v4
 
-      - name: Fetch the main branch
-        run: git fetch origin main
-
       - name: Setup Python & Poetry Environment
         uses: ./.github/actions/python-environment
 

exasol/toolbox/templates/github/workflows/checks.yml

@@ -50,7 +50,7 @@ jobs:
   Changelog:
     name: Changelog Update Check
     runs-on: ubuntu-24.04
-    if: ${{ github.ref != 'refs/heads/main' }}
+    if: ${{ github.ref != 'refs/heads/main' && github.ref != 'refs/heads/master' }}
 
     steps:
       - name: SCM Checkout