Java 21 Bump

The latest Loom version requires Java 21 minimum.

Author: SmushyTaco

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
       matrix:
         # Use these 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-latest, windows-latest]
@@ -34,7 +34,7 @@ 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@v5
         with:
           name: Artifacts

README.md

@@ -5,7 +5,7 @@ Template for making Babric mods for BTA!
 **Note: *DO NOT fork this repository unless you want to contribute!***
 
 ## Prerequisites
-- JDK for Java 17 ([Eclipse Temurin](https://adoptium.net/temurin/releases/) recommended)
+- JDK for Java 21 ([Eclipse Temurin](https://adoptium.net/temurin/releases/) recommended)
 - [Intellij IDEA](https://www.jetbrains.com/idea/download/) (Scroll down for the free community edition, if using linux **DO NOT** use the flatpak distribution)
 - Minecraft Development plugin (Optional, but highly recommended)