chore: enable verification for gradle deps

Author: kruton

.gitignore

@@ -110,3 +110,7 @@ local.properties
 
 # Git worktrees
 .worktrees/
+
+# Gradle dependency verification caches and backups
+gradle/verification-keyring.gpg
+gradle/verification-keyring.keys.bak

gradle.properties

@@ -1,3 +1,6 @@
+org.gradle.caching=true
+org.gradle.parallel=true
+org.gradle.jvmargs=-Xmx4g -XX:MaxMetaspaceSize=2g
 org.gradle.configuration-cache=false
 #org.gradle.configuration-cache.parallel=true