CI: Try to build on tag pushes.

Author: glenn20

.github/workflows/build.yaml

@@ -3,10 +3,12 @@ name: Build and publish to test.pypi.org
 on:
   push:
     branches: [main, dev]
+    tags:
+      - 'v*'  # Push events to matching v*, i.e., v1.0, v20.15.10
 
 jobs:
   build:
-    name: Build package
+    name: Build package ${{ github.ref }}
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository