ci: Run wheel workflow on certain pushes

We were only running the wheel workflow on pushes of TAGS, but this
change also will run it when we push to release, and dev-3.* branches.

My usual release workflow is that to first push the "release" branch,
watch for it to pass CI, then add the tag and push the tag and draft
the release.  If a problem with the wheel workflow isn't discovered
until we've already pushed the tag, then a fix will require a new tag
and new release (we never re-tag a release). So this change will allow
us to catch any problems with the wheel worflow BEFORE we actually
irrevocably make the tag, since it's no big deal to add corrections to
the branch before tagging. It still won't upload the wheels until the
tag itself is pushed.

Signed-off-by: Larry Gritz <[email protected]>

.github/workflows/wheel.yml

@@ -13,9 +13,13 @@ permissions:
 
 on:
   push:
-    # Workflow run on tags for v3 only.
+    # Workflow run on tags for v3 only, or pre-tagged pushes of release, or
+    # dev-3.* branches.
     tags:
       - v3.*
+    branches:
+      - release
+      - dev-3.*
   pull_request:
     # Workflow run on pull_request only when related files change.
     paths: