change java version in build.yml

Author: ryleu

Diff for: .github/workflows/build.yml

@@ -10,12 +10,12 @@ jobs:
   build:
     strategy:
       matrix:
-        # Use these Java versions
+        # Use this Java versions
         java: [
-          17,    # Current Java LTS & minimum supported by Minecraft
+          21,    # Current Java LTS & minimum supported by Minecraft
         ]
-        # and run on both Linux and Windows
-        os: [ubuntu-22.04, windows-2022]
+        # and run Linux
+        os: [ubuntu-22.04]
     runs-on: ${{ matrix.os }}
     steps:
       - name: checkout repository
@@ -33,7 +33,7 @@ jobs:
       - name: build
         run: ./gradlew build
       - name: capture build artifacts
-        if: ${{ runner.os == 'Linux' && matrix.java == '17' }} # Only upload artifacts built from latest java on one OS
+        if: ${{ runner.os == 'Linux' && matrix.java == '21' }} # Only upload artifacts built from latest java on one OS
         uses: actions/upload-artifact@v3
         with:
           name: Artifacts