chore: adding CURRENT_DATE environment variable to workflow

.github/workflows/nightly-builds.yml

@@ -18,6 +18,10 @@ jobs:
         distribution: 'temurin'
         cache: gradle
         
+    - name: Get current date
+      id: date
+      run: echo "::set-output name=date::$(date +'%Y-%m-%d')"
+
     - name: Grant execute permission for gradlew
       run: chmod +x gradlew
     
@@ -35,6 +39,7 @@ jobs:
           SIGNING_KEY_ALIAS: ${{ secrets.SIGNING_KEY_ALIAS }}
           SIGNING_KEY_PASSWORD: ${{ secrets.SIGNING_KEY_PASSWORD }}
           SIGNING_STORE_PASSWORD: ${{ secrets.SIGNING_STORE_PASSWORD }}
+          CURRENT_DATE: ${{ steps.date.outputs.date }}
       
     - name: Upload a Build Artifact
       uses: actions/upload-artifact@v3.1.2