ci: Update action/checkout to v4

.github/workflows/build.yml

@@ -3,15 +3,13 @@ on: [pull_request, push]
 
 jobs:
   build:
+    name: Build
     runs-on: ubuntu-latest
+    container:
+      image: eclipse-temurin:17-jdk
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: gradle/wrapper-validation-action@v1
-      - name: Setup JDK
-        uses: actions/setup-java@v3
-        with:
-          distribution: temurin
-          java-version: 17
       - run: chmod +x ./gradlew
       - name: Build with Gradle
         run: ./gradlew build --stacktrace

.github/workflows/release.yml

@@ -1,8 +1,3 @@
-# Automatically build the project and run any configured tests for every push
-# and submitted pull request. This can help catch issues that only occur on
-# certain platforms or Java versions, and provides a first line of defence
-# against bad commits.
-
 name: release
 on:
   release:
@@ -12,14 +7,11 @@ jobs:
   build:
     name: Build
     runs-on: ubuntu-latest
+    container:
+      image: eclipse-temurin:17-jdk
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: gradle/wrapper-validation-action@v1
-      - name: Setup JDK
-        uses: actions/setup-java@v3
-        with:
-          distribution: "temurin"
-          java-version: 17
       - run: chmod +x ./gradlew
       - name: Build with Gradle
         run: ./gradlew build --stacktrace
@@ -55,14 +47,11 @@ jobs:
   deploy-mod:
     name: Deploy Mod
     runs-on: ubuntu-latest
+    container:
+      image: eclipse-temurin:17-jdk
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: gradle/wrapper-validation-action@v1
-      - name: Setup JDK
-        uses: actions/setup-java@v3
-        with:
-          distribution: "temurin"
-          java-version: 17
       - run: chmod +x ./gradlew
       - name: Build with Gradle
         run: ./gradlew build --stacktrace