chore(deps): update davidanson/markdownlint-cli2-action action to v20

.gitea/workflows/build.yaml

@@ -17,7 +17,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4.2.2
       - uses: docker/setup-qemu-action@v3.6.0
-      - uses: docker/setup-buildx-action@v3.11.1
+      - uses: docker/setup-buildx-action@v3.10.0
 
       - name: Build image
         run: |
@@ -35,7 +35,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4.2.2
       - uses: docker/setup-qemu-action@v3.6.0
-      - uses: docker/setup-buildx-action@v3.11.1
+      - uses: docker/setup-buildx-action@v3.10.0
 
       - name: Build image
         run: |

.gitea/workflows/release.yaml

@@ -11,7 +11,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4.2.2
       - uses: docker/setup-qemu-action@v3.6.0
-      - uses: docker/setup-buildx-action@v3.11.1
+      - uses: docker/setup-buildx-action@v3.10.0
 
       - uses: docker/login-action@v3.4.0
         with:
@@ -36,7 +36,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4.2.2
       - uses: docker/setup-qemu-action@v3.6.0
-      - uses: docker/setup-buildx-action@v3.11.1
+      - uses: docker/setup-buildx-action@v3.10.0
 
       - uses: docker/login-action@v3.4.0
         with:

Dockerfile

@@ -1,4 +1,4 @@
-FROM docker.io/library/alpine:3.22.1
+FROM docker.io/library/alpine:3.21.3
 
 # The file /etc/apk/repositories contains a list of the apk repositories. By
 # default contains this file a list of the stable repositories pointing to the