Sign on merge too

.github/workflows/merge.yml

@@ -31,8 +31,16 @@ jobs:
         server-id: ossrh
         server-username: ${{ secrets.OSSRH_USERNAME }}
         server-password: ${{ secrets.OSSRH_PASSWORD }}
+
+    - name: Configure GPG Key
+      run: |
+        echo -n "$GPG_SIGNING_KEY" | base64 --decode | gpg --import
+      env:
+        GPG_SIGNING_KEY: ${{ secrets.GPG_SIGNING_KEY }}
+
     - name: Build with Maven
       run: mvn --batch-mode --update-snapshots verify
+
     - name: Upload coverage to Codecov
       uses: codecov/codecov-action@v2
       with:
@@ -46,4 +54,4 @@ jobs:
       run: mvn --batch-mode deploy
       env:
         MAVEN_USERNAME: ${{ secrets.OSSRH_USERNAME }}
-        MAVEN_PASSWORD: ${{ secrets.OSSRH_TOKEN }}
+        MAVEN_PASSWORD: ${{ secrets.OSSRH_TOKEN }}