OPENNLP-1689 - Update GH actions with ASF #builds security recommendations

Author: rzo1

.github/workflows/maven.yml

@@ -40,6 +40,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
     - uses: actions/cache@v4
       with:
         path: ~/.m2/repository

.github/workflows/publish-snapshots.yml

@@ -31,6 +31,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - name: Cache Maven Repository
         uses: actions/cache@v4
         with: