Bump sinon from 7.5.0 to 8.1.1

Bumps [sinon](https://github.com/sinonjs/sinon) from 7.5.0 to 8.1.1.
- [Release notes](https://github.com/sinonjs/sinon/releases)
- [Changelog](https://github.com/sinonjs/sinon/blob/master/CHANGELOG.md)
- [Commits](sinonjs/sinon@v7.5.0...v8.1.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -123,7 +123,7 @@
     "qruri": "0.0.4",
     "resize-observer-polyfill": "1.5.1",
     "simple-html-tokenizer": "0.5.9",
-    "sinon": "7.5.0",
+    "sinon": "8.1.1",
     "svg-inline-loader": "0.8.0",
     "svgo": "1.3.2",
     "svgo-loader": "2.2.1",