GHA: Minor tweaks (#458)

- Renamed checks.yml to ci.yml
- Add concurrency control to ci to auto-cancel outdated ci runs
- Publish releases to pypi instead of test.pypi.org

.github/workflows/checks.yml → .github/workflows/ci.yml

@@ -10,6 +10,10 @@ on:
     branches:
     - main
 
+concurrency:
+  group: ci-${{ github.ref }}-1
+  cancel-in-progress: true
+
 jobs:
   checks:
     runs-on: "ubuntu-latest"

.github/workflows/github-release.yml

@@ -10,5 +10,5 @@ jobs:
     uses: ./.github/workflows/publish-release.yml
     secrets: inherit # pass all secrets (required to access secrets in a called workflow)
     with:
-      pypi_target: "test.pypi.org"
+      pypi_target: "pypi.org"
       repo_release_ref: ${{ github.ref_name }}