Test with JDK 25 (#237)

Makes sure Vert.x gRPC test suite passes with Java 25, in all supported versions.

Signed-off-by: Thomas Segismont <tsegismont@gmail.com>

Author: tsegismont

.github/workflows/ci-4.x.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        jdk: [8, 17]
+        jdk: [8, 17, 25]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout