deps: update actions/setup-java action to v4 (#1549)

* deps: update actions/setup-java action to v4

* build: add distribution + actual version number

* build: remove redundant Maven setup

---------

Co-authored-by: Knut Olav Løite <koloite@gmail.com>

.github/workflows/integration-tests-against-emulator.yaml

@@ -16,12 +16,10 @@ jobs:
           - 9020:9020
 
     steps:
-    - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
-    - uses: stCarolas/setup-maven@v5
-      with:
-        maven-version: 3.8.1
-    - uses: actions/setup-java@v1
+    - uses: actions/checkout@v4
+    - uses: actions/setup-java@v4
       with:
+        distribution: temurin
         java-version: 8
     - run: java -version
     - run: .kokoro/build.sh

.github/workflows/spring-data-jdbc-sample.yaml

@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-java@v3
+      - uses: actions/setup-java@v4
         with:
           distribution: temurin
           java-version: 17

.github/workflows/spring-data-mybatis-sample.yaml

@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-java@v3
+      - uses: actions/setup-java@v4
         with:
           distribution: temurin
           java-version: 17

.github/workflows/unmanaged_dependency_check.yaml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: actions/setup-java@v3
+    - uses: actions/setup-java@v4
       with:
         distribution: temurin
         java-version: 11