ci: fixes broken gh-pages workflow

.github/workflows/gh-pages.yaml

@@ -6,21 +6,16 @@ on:
 
 jobs:
   deploy:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout Code
         uses: actions/checkout@v2
 
-      - name: Set up Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: "3.10"
-
       - name: Install Pipenv
         run: pip3 install pipenv
 
       - name: Install Dependencies
-        run: pipenv install --dev
+        run: pipenv install --categories docs
 
       - name: Build Documentation
         run: pipenv run python3 -m sphinx -M html docs/source docs/output

Pipfile

@@ -9,15 +9,19 @@ six = ">=1.13.0"
 urllib3 = ">=1.23"
 python-dateutil = ">=2.8.1"
 pytz = "*"
-jsonschema = "==4.0.0"
+jsonschema = ">=4.0.0"
 pyyaml = ">=5.4.1"
 
 [dev-packages]
 testtools = "==2.5.0"
 pyfakefs = "==3.7"
 mock = "==2.0.0"
-sphinx = "==4.2.0"
-furo = "==2021.10.9"
+
+[docs]
+pytz = "*"
+tzdata = "*"
+sphinx = "*"
+furo = "*"
 
 [requires]
 python_version = "3"