fix github action cache error

Author: HTHou

.github/workflows/e2e.yml

@@ -27,7 +27,7 @@ jobs:
     - name: Check out code into the Go module directory
       uses: actions/checkout@v4
 
-    - name: Cache go dependency
+    - name: Cache Go dependency
       uses: actions/cache@v4
       with:
         path: |
@@ -37,6 +37,14 @@ jobs:
         restore-keys: |
           ${{ runner.os }}-go-
 
+    - name: Cache Maven dependency
+      uses: actions/cache@v4
+      with:
+        path: ~/.m2/repository
+        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+        restore-keys: |
+          ${{ runner.os }}-maven-
+
     - name: Integration test
       run: |
         make e2e_test e2e_test_clean