Add NVD api key for CVEs scanning

Author: tavv94

.github/workflows/cve-scanning-gradle.yml

@@ -13,6 +13,8 @@ on:
 jobs:
   scan:
     runs-on: ubuntu-latest
+    env:
+      NVD_API_KEY: "${{ secrets.NVD_API_KEY }}"
     steps:
       - uses: actions/checkout@v4
       - name: Set up JDK 17
@@ -22,6 +24,12 @@ jobs:
           distribution: 'temurin'
       - name: Build with Gradle
         run: ./gradlew build
+      - name: Check env variable
+        run: >
+          if [[ -z "${NVD_API_KEY}" ]]; then
+            echo "[FAILURE] Missing NVD_API_KEY env variable" && exit 1
+          else
+            echo "[SUCCESS] NVD_API_KEY env variable exists"
+          fi
       - name: CVEs
         run: ./gradlew dependencyCheckAggregate
-