Merge branch 'stable-3.1'

* stable-3.1:
  Bump Bazel version to 3.4.1

Change-Id: Ida2483b4ee89c89767cd019ac887c8106d3c1988
diff --git a/.bazelversion b/.bazelversion
index fd2a018..47b322c 100644
--- a/.bazelversion
+++ b/.bazelversion
@@ -1 +1 @@
-3.1.0
+3.4.1