💚 add corepack so yarn works

.forgejo/workflows/semver.yml

@@ -7,6 +7,12 @@ jobs:
   semver:
     runs-on: ubuntu-latest
     steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+    - name: Enable Corepack
+      run: corepack enable
     - name: Setup Node
       uses: actions/setup-node@v4
       with:
@@ -15,10 +21,7 @@ jobs:
       run: |
         yarn set version canary
         yarn config set nodeLinker node-modules
-    - name: Checkout
-      uses: actions/checkout@v4
-      with:
-        fetch-depth: 0
+    
     - name: yarn install
       run: yarn install --immutable
     - name: Semver