Fix getParams return type.

jni zero became more strict with https://chromium-review.git.corp.google.com/c/chromium/src/+/7697400 which breaks the Chromium roll in WebRTC:
 https://ci.chromium.org/ui/p/webrtc/builders/try/android_compile_x64_dbg/87719/overview

Change-Id: I59f14149818f1cab45836cc1a9b385f204430f48
Bug: None
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/462140
Reviewed-by: Evan Shrubsole <eshr@webrtc.org>
Commit-Queue: Jeremy Leconte <jleconte@google.com>
Cr-Commit-Position: refs/heads/main@{#47351}

sdk/android/api/org/webrtc/VideoCodecInfo.java

diff --git a/sdk/android/api/org/webrtc/VideoCodecInfo.java b/sdk/android/api/org/webrtc/VideoCodecInfo.java
index 4f97cf7..363be34 100644
--- a/sdk/android/api/org/webrtc/VideoCodecInfo.java
+++ b/sdk/android/api/org/webrtc/VideoCodecInfo.java
@@ -80,7 +80,7 @@
   }
 
   @CalledByNative
-  Map getParams() {
+  Map<String, String> getParams() {
     return params;
   }
 }