chore: cache go build deps

.github/workflows/build.yaml

@@ -31,10 +31,12 @@ jobs:
       - name: Setup Mise
         uses: jdx/mise-action@v2
 
-      - name: Get pnpm store directory
+      - name: Set caching paths
         shell: bash
         run: |
           echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV
+          echo "GO_CACHE=$(go env GOCACHE)" >> $GITHUB_ENV
+          echo "GO_MODCACHE=$(go env GOMODCACHE)" >> $GITHUB_ENV
 
       - uses: actions/cache@v4
         name: Setup pnpm cache
@@ -44,6 +46,14 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-pnpm-store-
 
+      - name: Setup Go cache
+        uses: actions/cache@v4
+        with:
+          path: |
+            ${{ env.GO_CACHE }}
+            ${{ env.GO_MODCACHE }}
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.mod', '**/go.sum') }}
+
       - name: CI pipeline
         run: mise run ci