Loosen pdm dep

pdm-project/update-deps-action#2

Author: hynek

.github/workflows/upgrade-dependencies.yml

@@ -17,7 +17,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - uses: pdm-project/update-deps-action@v1.2
+      - uses: pdm-project/update-deps-action@v1
         with:
           commit-message: Update dependencies
           update-strategy: all