[BUGFIX] Run github action only on tags in the public repo

Signed-off-by: Marcus Schwemer <marcus.schwemer@in2code.de>
(cherry picked from commit f429fb5)

.github/workflows/ter-release.yml

@@ -10,11 +10,12 @@ on:
 
 jobs:
   ter-release:
+    if: github.repository == 'in2code-de/powermail'
     name: TER release
     runs-on: ubuntu-latest
     env:
       TYPO3_EXTENSION_KEY: 'powermail'
-      REPOSITORY_URL: 'https://github.com/einpraegsam/powermail'
+      REPOSITORY_URL: 'https://github.com/in2code-de/powermail'
       TYPO3_API_TOKEN: ${{ secrets.TYPO3_API_TOKEN }}
       TYPO3_API_USERNAME: ${{ secrets.TYPO3_API_USERNAME }}
       TYPO3_API_PASSWORD: ${{ secrets.TYPO3_API_PASSWORD }}