build: kill Finicky process after new build

Author: johnste

scripts/build.sh

@@ -71,4 +71,5 @@ if [ -z "$BUILD_TARGET_ARCH" ]; then
     cp -r apps/finicky/build/Finicky.app /Applications/
 fi
 
-echo "Build complete ✨"
+echo "Build complete ✨"
+killall Finicky