chore(deps): update davidanson/markdownlint-cli2-action action to v21

.gitea/workflows/markdown-linters.yaml

@@ -17,6 +17,6 @@ jobs:
     - ubuntu-latest
     steps:
     - uses: actions/checkout@v5.0.1
-    - uses: DavidAnson/markdownlint-cli2-action@v20.0.0
+    - uses: DavidAnson/markdownlint-cli2-action@v21.0.0
       with:
         globs: '**/*.md'

Makefile

@@ -1,6 +1,6 @@
 # MARKDOWNLINT_VERSION
 # Only required to install a specify version
-MARKDOWNLINT_VERSION?=v0.46.0 # renovate: datasource=github-releases depName=igorshubovych/markdownlint-cli
+MARKDOWNLINT_VERSION?=v0.45.0 # renovate: datasource=github-releases depName=igorshubovych/markdownlint-cli
 
 # CONTAINER_RUNTIME
 # The CONTAINER_RUNTIME variable will be used to specified the path to a