ci(release): seperate is-tag as a job

Signed-off-by: Dwi Siswanto <me@dw1.io>

.github/workflows/release.yaml

@@ -9,18 +9,25 @@ env:
   PGO_FILE: "default.pgo"
 
 jobs:
+  is-tag:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Is ref tag?
+        if: >
+          (
+            github.ref_type != 'tag' &&
+            github.event_name == 'workflow_dispatch'
+          )
+        run: exit 1
+
   release:
-    name: goreleaser-cross
     runs-on: ubuntu-latest
+    needs: is-tag
     container:
       image: ghcr.io/goreleaser/goreleaser-cross:latest
     steps:
       - uses: actions/checkout@master
 
-      - name: Is ref tag?
-        if: (github.event_name == 'workflow_dispatch' && github.ref_type != 'tag')
-        run: exit 1
-
       - uses: actions/setup-go@v5
         with:
           go-version-file: 'go.mod'