build: fix pipeline

.gitea/workflows/build.yml

@@ -21,9 +21,12 @@ jobs:
         with:
           node-version: "24"
           cache: "pnpm"
+          cache-dependency-path: pnpm-lock.yaml
 
-      - name: Enable corepack
-        run: corepack enable
+      - name: Enable pnpm via corepack
+        run: |
+          corepack enable
+          corepack prepare pnpm@9.12.0 --activate
 
       - name: Install deps
         run: pnpm install --frozen-lockfile
@@ -44,9 +47,12 @@ jobs:
         with:
           node-version: "24"
           cache: "pnpm"
+          cache-dependency-path: pnpm-lock.yaml
 
-      - name: Enable corepack
-        run: corepack enable
+      - name: Enable pnpm via corepack
+        run: |
+          corepack enable
+          corepack prepare pnpm@9.12.0 --activate
 
       - name: Install deps
         run: pnpm install --frozen-lockfile