Unpin mkdocs, remove emoji config for now (#6192)

* Unpin mkdocs

* bump python

* try remove

.github/workflows/main.yml

@@ -2,7 +2,7 @@ name: Build docs site
 
 on:
   push:
-    branches: [11.x, 12.x, 13.x]
+    branches: [ 11.x, 12.x, 13.x, actions ]
     tags: ["11.*", "12.*", "13.*"]
 
 jobs:
@@ -20,14 +20,14 @@ jobs:
         run: |
           git config --local user.email "[email protected]"
           git config --local user.name "Drush Documentation Bot"
-      - name: Set up Python 3.8
+      - name: Set up Python
         uses: actions/setup-python@v2
         with:
-          python-version: '3.8'
+          python-version: '3.9'
       - name: Install Python dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install mkdocs==1.4.3 mkdocs-material mike mkdocs-git-authors-plugin mkdocs-redirects mkdocs-git-revision-date-localized-plugin pymdown-extensions git+https://gitlab.com/blacs30/mkdocs-edit-url.git
+          pip install mkdocs-material mike mkdocs-git-authors-plugin mkdocs-redirects mkdocs-git-revision-date-localized-plugin pymdown-extensions git+https://gitlab.com/blacs30/mkdocs-edit-url.git
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:

mkdocs_base.yml

@@ -70,9 +70,6 @@ markdown_extensions:
   - pymdownx.superfences: { }
   - pymdownx.tabbed:
       alternate_style: true
-  - pymdownx.emoji:
-      emoji_index: '!!python/name:material.extensions.emoji.twemoji'
-      emoji_generator: '!!python/name:material.extensions.emoji.to_svg'
 nav:
   - Home: index.md
   - Use: