Ci: Use sphinx from pip (#58)

Take recommendations from coderabbit to accoiunt:
- #12

Author: glensc

.github/workflows/docs-build.yml

@@ -36,9 +36,12 @@ jobs:
           echo "__version__ = '$version'" | tee trakt/__version__.py
           python -c "from trakt import __version__; print(__version__)"
 
-          # Install deps and build docs
-          pip install -r requirements.txt
-          sudo apt install sphinx
+          # Install deps
+          python -m pip install --upgrade pip
+          python -m pip install -r requirements.txt
+          python -m pip install 'sphinx>=7.1.0'
+
+          # Build docs
           make docs
 
 # vim:ts=2:sw=2:et

.github/workflows/docs-upload.yml

@@ -44,15 +44,19 @@ jobs:
 
       - name: Install dependencies and build docs
         run: |
+          set -eux
+
           # Setup version
           version=$(git describe --tags --abbrev=0)
-          echo "__version__ = '$version'" > trakt/__version__.py
-          cat trakt/__version__.py
+          echo "__version__ = '$version'" | tee trakt/__version__.py
           python -c "from trakt import __version__; print(__version__)"
 
-          # Install deps and build docs
-          pip install -r requirements.txt
-          sudo apt install sphinx
+          # Install deps
+          python -m pip install --upgrade pip
+          python -m pip install -r requirements.txt
+          python -m pip install 'sphinx>=7.1.0'
+
+          # Build docs
           make docs
 
       - name: Setup Pages