Add NetworkStackApi34Shims to allowed deps

This is the new version of NetworkStackApi33Shims to provide a
compatibility layer for U APIs.

Apex-Size-Increase: Minimal (just a few empty classes for now)
Previous-Platform-Support: Yes (that's what the shims are for)
Aosp-First: Yes
Test-Info: Tested in module tests (as with the rest of module code)

Test: atest NetworkStackTests
Bug: 216396304
Merged-In: I8d10138e8a9d1c098972c8a89d59b92e13942e6f
Change-Id: Idce1e24e0ddacbc21972111b113a693c4097fc21
diff --git a/build/allowed_deps.txt b/build/allowed_deps.txt
index 7fab83f..6ab2763 100644
--- a/build/allowed_deps.txt
+++ b/build/allowed_deps.txt
@@ -665,6 +665,7 @@
 NetworkStackApi30Shims(minSdkVersion:29)
 NetworkStackApi31Shims(minSdkVersion:29)
 NetworkStackApi33Shims(minSdkVersion:29)
+NetworkStackApi34Shims(minSdkVersion:29)
 NetworkStackApiCurrentShims(minSdkVersion:29)
 NetworkStackApiStableLib(minSdkVersion:29)
 NetworkStackApiStableShims(minSdkVersion:29)