Bump @material/mwc-icon from 0.18.0 to 0.19.1 (#255)

Bumps [@material/mwc-icon](https://github.com/material-components/material-components-web-components/tree/HEAD/packages/icon) from 0.18.0 to 0.19.1.
- [Release notes](https://github.com/material-components/material-components-web-components/releases)
- [Changelog](https://github.com/material-components/material-components-web-components/blob/master/CHANGELOG.md)
- [Commits](https://github.com/material-components/material-components-web-components/commits/v0.19.1/packages/icon)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

package.json

@@ -27,7 +27,7 @@
   },
   "dependencies": {
     "@google-web-components/google-apis": "^3.0.1",
-    "@material/mwc-icon": "0.18.0",
+    "@material/mwc-icon": "0.19.1",
     "@material/mwc-textfield": "^0.19.0",
     "lit-element": "^2.2.1",
     "lit-html": "^1.1.2",

yarn.lock

@@ -1204,10 +1204,10 @@
     lit-html "^1.1.2"
     tslib "^1.10.0"
 
-"@material/mwc-icon@0.18.0":
-  version "0.18.0"
-  resolved "https://registry.yarnpkg.com/@material/mwc-icon/-/mwc-icon-0.18.0.tgz#7164aaac89616241bb924a5a9db668f8c54e04bd"
-  integrity sha512-3tYVi7DqGuL3Rk+iy+O6Mf/yB3Gc70Pf9RKMEXlEbTCilLqKTEDf4qp9RuUMN8QvWBsIH9dBWRvbApItYYgJfA==
+"@material/mwc-icon@0.19.1":
+  version "0.19.1"
+  resolved "https://registry.yarnpkg.com/@material/mwc-icon/-/mwc-icon-0.19.1.tgz#4dddf27a9f24262b02ea9cddc39800fec8b42920"
+  integrity sha512-MM3Qz3Inkyo4gU5bHDp/o9TEk9K53Y+glbJGiAUj1dAisrRSwptd7xagROzzmVKlcxN+OHqBOGLFx49ztFP/7Q==
   dependencies:
     lit-element "^2.3.0"
     tslib "^1.10.0"