ci: use stable go version for doc generation

Author: MarvinJWendt

.github/workflows/docs.yml

@@ -37,7 +37,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v6
         with:
-          go-version-file: go.mod
+          go-version: stable
           cache: true
 
       - name: Install documentation tools