Let dependabot handle versioning

.github/workflows/deploy.yml

@@ -10,8 +10,8 @@ jobs:
     name: Deploy docs
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.4
+      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2.2.2
+      - uses: actions/setup-python@v2
         with:
           python-version: 3.x
       - run: pip install -r docs/requirements.txt

.github/workflows/lint.yml

@@ -6,7 +6,7 @@ jobs:
   editorconfig-checker:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.4
+      - uses: actions/checkout@v2
       - name: editorconfig-checker
         run: |
           docker run --rm -v ${GITHUB_WORKSPACE}:/check mstruebing/editorconfig-checker
@@ -14,7 +14,7 @@ jobs:
   markdownlint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.4
+      - uses: actions/checkout@v2
       - name: markdownlint
         run: |
           find ~+ ${github_workspace} -name '*.md' | xargs docker run --rm -v ${GITHUB_WORKSPACE}:${GITHUB_WORKSPACE} markdownlint/markdownlint -r ~MD013,~MD033,~MD034,~MD046,~MD002
@@ -22,7 +22,7 @@ jobs:
   yamllint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2.3.4
+      - uses: actions/checkout@v2
       - name: yamllint
         run: |
           find ~+ ${github_workspace} -name '*.yaml' -o -name '*.yml' | xargs docker run --rm -v ${GITHUB_WORKSPACE}:${GITHUB_WORKSPACE} peterdavehello/yamllint yamllint -d '{extends: default, rules: {document-start: {present: false}, line-length: disable}}'

docs/requirements.txt

@@ -1,8 +1,8 @@
-mkdocs>=1.1.2
+mkdocs==1.1.2
-mkdocs-material>=6.1.0
+mkdocs-material==6.1.0
-pymdown-extensions>=3.3.2
+pymdown-extensions==3.3.2
-mkdocs-macros-plugin>=0.4.18
+mkdocs-macros-plugin==0.4.18
-mkdocs-awesome-pages-plugin>=2.4.0
+mkdocs-awesome-pages-plugin==2.4.0
-mkdocs-redirects>=1.0.1
+mkdocs-redirects==1.0.1
-mkdocs-git-revision-date-localized-plugin>=0.7.3
+mkdocs-git-revision-date-localized-plugin==0.7.3
 git+git://github.com/g-provost/lightgallery-markdown#egg=lightgallery