Rework CI to trigger executions within each module (#148)

.github/workflows/spring-batch-geode.yml

@@ -1,21 +1,24 @@
 name: Spring Batch Geode
 
 on:
-  push:
-    branches: [ main ]
   pull_request:
-    branches: [ main ]
+    paths:
+      - 'spring-batch-geode/**'
+  push:
+    paths:
+      - 'spring-batch-geode/**'
 
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout source code
-        uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set up JDK 1.8
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v4
         with:
-          java-version: 1.8
+          distribution: 'temurin'
+          java-version: '1.8'
+          cache: 'maven'
       - name: Build with Maven
-        run: mvn -B package --file pom.xml
+        run: mvn -B package
         working-directory: spring-batch-geode