Fix pdm github actions (#306)

* Update content hash in pdm.lock

* update PDM setup action to version 4.2

* Update documentation generation command to use PDM

Author: mogres

.github/actions/pdm/action.yml

@@ -4,7 +4,7 @@ runs:
   using: composite
   steps:
     - name: Set up PDM
-      uses: pdm-project/setup-pdm@v4
+      uses: pdm-project/setup-pdm@v4.2
       with:
         python-version: "3.9"
         # Cache all dependencies installed from pdm.lock

.github/workflows/build-docs.yml

@@ -16,7 +16,7 @@ jobs:
     - uses: ./.github/actions/dependencies
     - name: Generate Docs
       run: |
-        make gen-docs
+        pdm run make gen-docs
         touch docs/_build/html/.nojekyll
     - name: Publish Docs
       uses: JamesIves/[email protected]