Migrate Workflows to use Node 20 (#58)

* Update actions to use Node 20

Author: deleonenriqueta

.github/workflows/publish_main_snapshot.yml

@@ -8,7 +8,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set up JDK 11
         uses: actions/setup-java@v4
         with:

.github/workflows/snyk_scan.yml

@@ -21,7 +21,7 @@ jobs:
           ref: 'main'
 
       - name: Run Snyk To Check For Vulnerabilities
-        uses: snyk/actions/gradle@master
+        uses: snyk/actions/gradle-jdk11@master
         env:
           SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
         with: