Fix some issues that were causing build failures/warnings with the CI workflow (#100)

* Bump up actions versions to latest for ci workflow

* modify enchant package installed in ci workflow

* Suppress caching warning in ci workflow

* Spelling.

---------

Co-authored-by: Steven! Ragnarök <[email protected]>

Author: sdmcgrath

.github/workflows/ci.yml

@@ -8,14 +8,14 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v5
       with:
-        python-version: 3.8
+        python-version: 3.11
     - name: Install dependencies
       run: |
-        sudo apt update && sudo apt install -y enchant graphviz
+        sudo apt update && sudo apt install -y enchant-2 graphviz
         python -m pip install --upgrade setuptools
         python -m pip install --upgrade doc8 pyenchant sphinx-rtd-theme sphinxcontrib-spelling
     - name: Check spelling

conf.py

@@ -50,6 +50,10 @@
 except ImportError:
     pass
 
+# Allow/suppress warning that spelling_filters is unpicklable 
+# and cannot be cached (which will cause CI workflow to fail)
+suppress_warnings = ["config.cache"]
+
 spelling_word_list_filename = 'spelling_wordlist.txt'
 
 # Add any paths that contain templates here, relative to this directory.