Update GitHub Actions to use latest versions of actions

Upgraded several actions in workflow files to their latest versions, including `checkout`, `setup-java`, `setup-gradle`, and `action-gh-release`. This ensures compatibility, stability, and access to the latest improvements and features in the workflows.

Author: Newspicel

.github/workflows/build.yml

@@ -15,21 +15,21 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up JDK 17
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           java-version: '17'
           distribution: 'temurin'
           cache: gradle
 
       - name: Build & Test with Gradle
-        uses: gradle/gradle-build-action@v2
+        uses: gradle/actions/setup-gradle@v3
         with:
           arguments: build
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: mc-kotlin
           path: build/libs/*.jar

.github/workflows/publish.yml

@@ -14,29 +14,29 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up JDK 17
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           java-version: '17'
           distribution: 'temurin'
           cache: gradle
 
       - name: Gradle Build
-        uses: gradle/gradle-build-action@v2
+        uses: gradle/actions/setup-gradle@v3
         with:
           arguments: build
 
       - name: Gradle Publish
-        uses: gradle/gradle-build-action@v2
+        uses: gradle/actions/setup-gradle@v3
         with:
           arguments: publish -Dorg.gradle.project.version=${{ github.event.release.tag_name }}
         env:
           USERNAME: ${{ github.repository_owner }}
           TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Upload a Build Artifact
-        uses: softprops/action-gh-release@v1
+        uses: softprops/action-gh-release@v2
         with:
           files: build/libs/*.jar