peppercarrot - update recipe, java17

metadata/nightlock.peppercarrot.yml

@@ -56,12 +56,12 @@ Builds:
     versionCode: 12
     commit: 0fa40c392ce9d240d19b74d601ae3cd690172af0
     subdir: app
+    sudo:
+      - apt-get update
+      - apt-get install -y openjdk-17-jdk-headless
+      - update-java-alternatives -a
     gradle:
       - yes
-    prebuild:
-      - echo -e '\nbuildscript { repositories { google() } }' >> ../build.gradle
-      - sed -i -e '/maven {/,+2d' ../build.gradle
-      - sed -i -e '/exclude group/d' build.gradle
 
 AutoUpdateMode: Version
 UpdateCheckMode: Tags