Increase bazel to 4.2.1 (#2625)

seanpmorgan · web-flow · commit 4617bc2e7e2a · 2021-12-14T22:31:51.000-08:00
diff --git a/.bazeliskrc b/.bazeliskrc
@@ -1 +1 @@
-USE_BAZEL_VERSION=3.7.2
+USE_BAZEL_VERSION=4.2.1
