Update gradle.properties for new parallel sync

Bug: none filed
Test: dogfood
Change-Id: I09d03ce72b62e751477f57360d3a41167d2a407d

base/gradle.properties

diff --git a/base/gradle.properties b/base/gradle.properties
index d169fed..c1bfe0c 100644
--- a/base/gradle.properties
+++ b/base/gradle.properties
@@ -14,4 +14,6 @@
 org.gradle.internal.problem.summary.threshold=500
 org.gradle.java.installations.auto-detect=false
 org.gradle.java.installations.auto-download=false
-org.gradle.java.installations.paths=../prebuilts/studio/jdk/jdk17/linux/,../prebuilts/studio/jdk/jdk17/win/,../prebuilts/studio/jdk/jdk17/mac-arm64/Contents/Home/,../prebuilts/studio/jdk/jdk17/mac/Contents/Home/
\ No newline at end of file
+org.gradle.java.installations.paths=../prebuilts/studio/jdk/jdk17/linux/,../prebuilts/studio/jdk/jdk17/win/,../prebuilts/studio/jdk/jdk17/mac-arm64/Contents/Home/,../prebuilts/studio/jdk/jdk17/mac/Contents/Home/
+# Enabled parallel sync for Gradle 9.4+
+org.gradle.tooling.parallel=true