build: bump material-components-web (angular#21563)

Bumps [material-components-web](https://github.com/material-components/material-components-web/tree/HEAD/packages/material-components-web) from 10.0.0-canary.b28c576d9.0 to 10.0.0-canary.968735356.0.
- [Release notes](https://github.com/material-components/material-components-web/releases)
- [Changelog](https://github.com/material-components/material-components-web/blob/master/CHANGELOG_ARCHIVE.md)
- [Commits](https://github.com/material-components/material-components-web/commits/HEAD/packages/material-components-web)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package.json

@@ -62,7 +62,7 @@
     "@types/youtube": "^0.0.40",
     "@webcomponents/custom-elements": "^1.1.0",
     "core-js": "^2.6.9",
-    "material-components-web": "10.0.0-canary.b28c576d9.0",
+    "material-components-web": "10.0.0-canary.968735356.0",
     "rxjs": "^6.5.3",
     "rxjs-tslint-rules": "^4.33.1",
     "systemjs": "0.19.43",