refactor: rework few tests and build system

This commit includes the following changes
* Bump github actions
* Update tests github action to check documentation and streamline
  process
* Update test cases to use temporary directories as roots
* Simplify tox.ini

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Extract version
         id: version
@@ -27,8 +27,7 @@ jobs:
           token: ${{ secrets.GITHUB_TOKEN }}
           filter: 'Release \d+\.\d+\.\d+'
 
-      - name: Install dependencies
-        uses: ConorMacBride/install-package@v1.1.0
+      - uses: ConorMacBride/install-package@v1.1.0
         with:
           apt: tox
 
@@ -38,7 +37,7 @@ jobs:
           VERSION: ${{ steps.version.outputs.VERSION }}
 
       - name: Publish release
-        uses: softprops/action-gh-release@v1
+        uses: softprops/action-gh-release@v2
         with:
           body: |
             ${{ steps.changelog.outputs.compareurl }}