[CI] get rid of go dependency

.gitea/workflows/build.yml

@@ -14,17 +14,16 @@ jobs:
           apt-get update;
           apt-get install --yes --no-install-recommends \
             nodejs \
-            golang-go \
             zstd
 
       - name: Checkout
         uses: actions/checkout@v3
 
       - name: Hash west module
-        uses: https://gitea.com/actions/go-hashfiles@v0.0.1
         id: hash-west
-        with: 
-          patterns: '**west.yml'
+        run: |
+          HASH=$(sha256sum config/west.yml)
+          echo "hash=$HASH" >> "$GITHUB_OUTPUT"
 
       - name: Cache west modules
         uses: actions/cache@v3