ci: use latest version of vault-action

Author: BernhardFuchs

.github/workflows/maven-deploy-snapshot.yml

@@ -16,7 +16,7 @@ jobs:
     steps:
       - uses: actions/checkout@master
       - name: Import Secrets
-        uses: hashicorp/vault-action@v2.1.1
+        uses: hashicorp/vault-action@v2.3.0
         with:
           url: ${{ secrets.VAULT_ADDR }}
           token: ${{ secrets.CI_SECRET_READER_PERIODIC_TOKEN }}