Silence rollup_bundle() during build

Change-Id: I5a1c403809e1817c5e37d107e667153c906e4aba
Release-Notes: skip
diff --git a/polygerrit-ui/app/rules.bzl b/polygerrit-ui/app/rules.bzl
index 01bb31f..f69ede4 100644
--- a/polygerrit-ui/app/rules.bzl
+++ b/polygerrit-ui/app/rules.bzl
@@ -26,6 +26,7 @@
         config_file = ":rollup.config.js",
         entry_point = entry_point,
         rollup_bin = "//tools/node_tools:rollup-bin",
+        silent = True,
         sourcemap = "hidden",
         deps = [
             "@tools_npm//rollup-plugin-node-resolve",
diff --git a/tools/bzl/js.bzl b/tools/bzl/js.bzl
index c8d6e4b..8025dab 100644
--- a/tools/bzl/js.bzl
+++ b/tools/bzl/js.bzl
@@ -110,6 +110,7 @@
         entry_point = entry_point,
         format = "iife",
         rollup_bin = "//tools/node_tools:rollup-bin",
+        silent = True,
         sourcemap = "hidden",
         config_file = "//plugins:rollup.config.js",
         deps = [
diff --git a/tools/node_tools/node_modules_licenses/BUILD b/tools/node_tools/node_modules_licenses/BUILD
index b88ec24..32b4250 100644
--- a/tools/node_tools/node_modules_licenses/BUILD
+++ b/tools/node_tools/node_modules_licenses/BUILD
@@ -27,6 +27,7 @@
     entry_point = "license-map-generator.ts",
     format = "cjs",
     rollup_bin = "//tools/node_tools:rollup-bin",
+    silent = True,
     deps = [
         ":licenses-map",
         "@tools_npm//rollup",
diff --git a/tools/node_tools/polygerrit_app_preprocessor/BUILD b/tools/node_tools/polygerrit_app_preprocessor/BUILD
index fa3ce56..ed7ef71 100644
--- a/tools/node_tools/polygerrit_app_preprocessor/BUILD
+++ b/tools/node_tools/polygerrit_app_preprocessor/BUILD
@@ -21,6 +21,7 @@
     entry_point = "preprocessor.ts",
     format = "cjs",
     rollup_bin = "//tools/node_tools:rollup-bin",
+    silent = True,
     deps = [
         ":preprocessor",
         "@tools_npm//rollup-plugin-node-resolve",
@@ -33,6 +34,7 @@
     entry_point = "links-updater.ts",
     format = "cjs",
     rollup_bin = "//tools/node_tools:rollup-bin",
+    silent = True,
     deps = [
         ":preprocessor",
         "@tools_npm//rollup-plugin-node-resolve",