Upgrade eslint-plugin-import

R=jacktfranklin@chromium.org

Bug: none
Change-Id: I0ad7ba9133af3db19c448a284d79bdfc08101dea
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3268294
Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org>
Auto-Submit: Tim van der Lippe <tvanderlippe@chromium.org>
Reviewed-by: Jack Franklin <jacktfranklin@chromium.org>
diff --git a/node_modules/is-string/index.js b/node_modules/is-string/index.js
index 5f77f03..f44f7bb 100644
--- a/node_modules/is-string/index.js
+++ b/node_modules/is-string/index.js
@@ -11,7 +11,7 @@
 };
 var toStr = Object.prototype.toString;
 var strClass = '[object String]';
-var hasToStringTag = typeof Symbol === 'function' && !!Symbol.toStringTag;
+var hasToStringTag = require('has-tostringtag/shams')();
 
 module.exports = function isString(value) {
 	if (typeof value === 'string') {