Update build-linux-gcc16-docker.yml

Enable workflow on pull request and push

Author: stsoe

.github/workflows/build-linux-gcc16-docker.yml

@@ -15,11 +15,11 @@ name: Linux build (GCC 16, Docker)
 
 on:
   workflow_dispatch:
-#  pull_request:
-#  push:
-#    branches:
-#      - master
-#      - main
+  pull_request:
+  push:
+    branches:
+      - master
+      - main
 
 permissions:
   contents: read