chore(ci): Changed github workflows to have a separate release workflow.

Now we build with python 3.9, our oldest supported python version.

.github/workflows/release.yml

@@ -0,0 +1,35 @@
+name: Release
+
+on:
+  push:
+    tags:
+    - '*'
+
+jobs:
+  build:
+    if: github.repository == 'jazzband/django-recurrence'
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up PDM for Python 3.9
+      uses: pdm-project/setup-pdm@v4
+      with:
+        python-version: 3.9
+
+    - name: Install dependencies
+      run: |
+        pdm sync -d -G dev
+
+    - name: Build wheels and sdist
+      run: |
+        pdm build
+
+    - name: Upload packages to Jazzband
+      if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+      uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        user: jazzband
+        password: ${{ secrets.JAZZBAND_RELEASE_KEY }}
+        repository_url: https://jazzband.co/projects/dj-database-url/upload

.github/workflows/test.yml

@@ -85,22 +85,3 @@ jobs:
           dist/*.whl
           dist/*.tar.gz
 
-  release:
-    needs:
-      - build
-    runs-on: ubuntu-latest
-    steps:
-      - name: Download artifacts
-        uses: actions/download-artifact@v4
-        with:
-          name: wheels
-          path: dist
-
-      - name: Upload packages to Jazzband
-        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
-        uses: pypa/gh-action-pypi-publish@release/v1.8
-        with:
-          user: jazzband
-          password: ${{ secrets.JAZZBAND_RELEASE_KEY }}
-          repository_url: https://jazzband.co/projects/django-recurrence/upload
-