ci: fix linter & enable manual docs rebuild

Author: jtieri

.github/workflows/ci.yml

@@ -27,9 +27,9 @@ jobs:
       - uses: actions/setup-go@v5
         with:
           go-version: "1.25.x"
-      - uses: golangci/golangci-lint-action@v6
+      - uses: golangci/golangci-lint-action@v7
         with:
-          version: latest
+          version: v2.11.2
 
   build:
     name: Build

.github/workflows/docs.yml

@@ -6,6 +6,8 @@ on:
     paths:
       - 'docs/**'
       - 'mkdocs.yml'
+      - '.github/workflows/docs.yml'
+  workflow_dispatch:
 
 permissions:
   contents: read