[ci skip] Oh neptune. (#2)

Updates checkout and setup-java from v1 -> v4, Then adds the distribution and check-latest flags to clarify what JDK engine we want and finally freeze the ubuntu version to specific version.

.github/workflows/maven.yml

@@ -1,17 +1,16 @@
-name: Java CI
-
+name: Java CI with Maven
 on: [push, pull_request]
-
 jobs:
   build:
-
-    runs-on: ubuntu-latest
-
+    runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v1
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v1
+    - name: Checkout Repository
+      uses: actions/checkout@v4
+    - name: Set up JDK 8
+      uses: actions/setup-java@v4
       with:
-        java-version: 1.8
+        distribution: 'temurin'
+        java-version: 8
+        check-latest: true
     - name: Build with Maven
       run: mvn package --file pom.xml