build: update bazel version to 3.7.2 (#1254)
build: update bazel version to 3.7.2 (#1254)

Description: Brings bazel version up to date with Envoy's.
Risk Level: Low
Testing: Local & CI

Signed-off-by: Mike Schore <270e364e708f2af319f244c09ceba52a03dbd980@gmail.com>
envoyproxy/envoy-mobile,envoyproxy/envoy-mobile,envoyproxy/envoy-mobile,envoyproxy/envoy-mobile,envoyproxy/envoy-mobile,envoyproxy/envoy-mobile,envoyproxy/envoy-mobile,envoyproxy/envoy-mobile,envoyproxy/envoy-mobile