Update CI configuration to use Ubuntu 24.04

Author: Neloop

.github/workflows/ci.yml

@@ -4,14 +4,14 @@ on: [push, pull_request]
 
 jobs:
   tests:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
         java: [8]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v5
       - name: Setup java ${{ matrix.java }}
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v5
         with:
           java-version: ${{ matrix.java }}