Strip timestamps from :buildSrc:jetpad-integration:jar

When looking through build scans I found that there was always a
cache miss for the transform on this jar
e.g. https://ge.androidx.dev/s/th2hhqgee2yqy/performance/build-cache?anchor=eyJpZCI6InJlbW90ZS1taXNzIn0&cacheDetails=remote-miss

Turns out it is because this is the only project in buildSrc that does
not apply shared.gradle.

Test: ./gradlew -p buildSrc jetpad-integration:jar -> jar has no
timestamps anymore

Change-Id: I1c9ef7315559b8c85d0a1d310e0d819b738eab3b
diff --git a/buildSrc/shared.gradle b/buildSrc/shared.gradle
index 0c85b7a..b135cf6 100644
--- a/buildSrc/shared.gradle
+++ b/buildSrc/shared.gradle
@@ -26,7 +26,7 @@
     targetCompatibility = JavaVersion.VERSION_17
 }
 
-project.tasks.withType(Jar) { task ->
+project.tasks.withType(Jar).configureEach { task ->
     task.reproducibleFileOrder = true
     task.preserveFileTimestamps = false
 }