Update bazel version to 5.3.1

This matches core stable-3.5. Also update bazlets to use the latest
dependencies.

Change-Id: I7ecb0e5684acc94891619827d0a2f73813a53572
diff --git a/.bazelrc b/.bazelrc
index e2feeb4..fb8e4d1 100644
--- a/.bazelrc
+++ b/.bazelrc
@@ -1,3 +1,8 @@
+build --java_language_version=11
+build --java_runtime_version=remotejdk_11
+build --tool_java_language_version=11
+build --tool_java_runtime_version=remotejdk_11
+
 build --workspace_status_command="python3 ./tools/workspace_status.py"
 build --repository_cache=~/.gerritcodereview/bazel-cache/repository
 build --action_env=PATH
diff --git a/.bazelversion b/.bazelversion
index 7c69a55..c7cb131 100644
--- a/.bazelversion
+++ b/.bazelversion
@@ -1 +1 @@
-3.7.0
+5.3.1
diff --git a/WORKSPACE b/WORKSPACE
index c5c1061..b648483 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "00a97f96162f06119021372f24e8a77d196079e1",
+    commit = "b6120a9fa50945d38f0a4d55d5879e3ec465c5e5",
 )
 
 load(