.github: make govuln-check generic

Signed-off-by: vivekpatani <9080894+vivekpatani@users.noreply.github.com>

.github/workflows/govuln.yaml

@@ -3,24 +3,10 @@ on: [push, pull_request]
 jobs:
   test:
     runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        target:
-          - linux-amd64-govuln-check
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
           go-version: "1.19.3"
       - run: date
-      - env:
-          TARGET: ${{ matrix.target }}
-        run: |
-          echo "${TARGET}"
-          case "${TARGET}" in
-            linux-amd64-govuln-check)
-              go install golang.org/x/vuln/cmd/govulncheck@latest
-              govulncheck ./...
-              ;;
-          esac
+      - run: go install golang.org/x/vuln/cmd/govulncheck@latest && govulncheck ./...