Merge branch 'stable-3.1' into stable-3.2

* stable-3.1:
  Bump Bazel version to 3.4.1

Change-Id: I930ef11c066925977a138792bb0e1846d78e27cd

.bazelversion

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