Update P4VM to use Bazel version 0.27.0

Change-Id: I693b9585555c26830782ab42e90347b981e84daf
diff --git a/tools/dev/p4vm/root-bootstrap.sh b/tools/dev/p4vm/root-bootstrap.sh
index d34c43e..9b35809 100755
--- a/tools/dev/p4vm/root-bootstrap.sh
+++ b/tools/dev/p4vm/root-bootstrap.sh
@@ -4,7 +4,7 @@
 
 VM_TYPE=${1:-dev}
 
-BAZEL_VER="0.24.1"
+BAZEL_VER="0.27.0"
 CORRETTO_URL="https://d3pxv6yz143wms.cloudfront.net/8.212.04.2/java-1.8.0-amazon-corretto-jdk_8.212.04-2_amd64.deb"
 
 # Disable automatic updates