fix: python version in release upload workflow (#36)

.github/workflows/ci.yml

@@ -70,6 +70,7 @@ jobs:
     runs-on: ubuntu-latest
     environment: test_release
     concurrency: release
+    if: github.ref_name != 'main'
 
     steps:
       - uses: actions/checkout@v4
@@ -85,7 +86,6 @@ jobs:
       # Dry run of PSR to build the distribution
       - name: Test release
         uses: python-semantic-release/[email protected]
-        if: github.ref_name != 'main'
         with:
           root_options: --noop
 
@@ -130,6 +130,11 @@ jobs:
           fetch-depth: 0
           ref: ${{ github.head_ref || github.ref_name }}
 
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: 3.12
+
       # On main branch: Call PSR to build the distribution
       - name: Release
         uses: python-semantic-release/[email protected]