add LLVM_*_VERSION envvars to allowlist

Bug: 273563660
Change-Id: I7c1e6b244e137b27126abcba22684db66fae0327
diff --git a/android/bazel_handler.go b/android/bazel_handler.go
index ade2c49..ace4e1a 100644
--- a/android/bazel_handler.go
+++ b/android/bazel_handler.go
@@ -61,6 +61,8 @@
 		"AUTO_UNINITIALIZE",
 		"USE_CCACHE",
 		"LLVM_NEXT",
+		"LLVM_PREBUILTS_VERSION",
+		"LLVM_RELEASE_VERSION",
 		"ALLOW_UNKNOWN_WARNING_OPTION",
 
 		// Overrides the version in the apex_manifest.json. The version is unique for