Docs: pin mkdocs version

Author: xsedla1o

.github/workflows/deploy.yml

@@ -19,4 +19,4 @@ jobs:
           key: ${{ github.ref }}
           path: .cache
       - run: pip install -r requirements.dev.txt
-      - run: mkdocs gh-deploy --force
+      - run: DISABLE_MKDOCS_2_WARNING=true mkdocs gh-deploy --force

requirements.dev.txt

@@ -1,4 +1,4 @@
-mkdocs>=1.6
+mkdocs~=1.6.1
 mkdocs-gen-files>=0.4
 mkdocs-literate-nav>=0.6
 mkdocs-llmstxt