Update GitHub actions to v4

Author: Ryorama

.github/workflows/build.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up JDK 1.17
       uses: actions/setup-java@v1
       with:
@@ -25,17 +25,17 @@ jobs:
     - name: Build with Gradle
       run: ./gradlew build
     - name: Upload Artifacts - Forge
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: Forge
         path: ./forge/build/libs
     - name: Upload Artifacts - Fabric
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: Fabric
         path: ./fabric/build/libs
     - name: Upload Artifacts - Quilt
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: Quilt
         path: ./quilt/build/libs