Icon height issue
Hi,

We're having an issue we cannot explain.
Height of icons generated by your font increased on windows 10 devices.
We're having this issue on Chrome (Version 94.0.4606.61) and Edge (Version 93.0.961.52).

What's happening exactly ?
Here is a screenshot before :
![image](https://user-images.githubusercontent.com/40990548/134645174-2cca0531-bd86-4d42-a9e4-5622ef75befc.png)

and after :
![image](https://user-images.githubusercontent.com/40990548/134646072-ce7c17ea-8834-41ac-875b-521ef454e5d8.png)

We didn't change anything concerning the font between the 2 releases.

Here is our package.json :

```
{
  "name": "qp-2018",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "dev": "webpack-dev-server --config webpack.dev.js",
    "build": "webpack --config webpack.build.js",
    "deploy": "npm run build && sh deploy.sh -p qp2020"
  },
  "repository": {
    "type": "git",
    "url": "git+ssh://git@bitbucket.org/lelynxfr/qp-2018.git"
  },
  "author": "Mikaël Guillin",
  "license": "ISC",
  "homepage": "https://bitbucket.org/lelynxfr/qp-2018#readme",
  "browserslist": [
    "defaults"
  ],
  "dependencies": {
    "bourbon": "^5.1.0",
    "caniuse-lite": "^1.0.30001173",
    "flickity": "^2.2.2",
    "flickity-imagesloaded": "^2.0.0",
    "js-cookie": "^2.2.1",
    "matches-selector-polyfill": "^1.0.0",
    "nodelist-foreach-polyfill": "^1.2.0",
    "tingle": "0.0.0",
    "tingle.js": "^0.13.2"
  },
  "devDependencies": {
    "@babel/core": "^7.12.10",
    "@babel/preset-env": "^7.12.11",
    "@beyonk/google-fonts-webpack-plugin": "^1.5.0",
    "autoprefixer": "^9.8.6",
    "babel-loader": "^8.2.2",
    "clean-webpack-plugin": "^1.0.1",
    "copy-webpack-plugin": "^4.6.0",
    "css-loader": "^1.0.1",
    "file-loader": "^2.0.0",
    "html-loader": "^0.5.5",
    "html-webpack-plugin": "^3.2.0",
    "iconfont-webpack-plugin": "^3.2.0",
    "json-loader": "^0.5.7",
    "mini-css-extract-plugin": "^0.4.4",
    "modernizr": "^3.11.4",
    "modernizr-loader": "^1.0.1",
    "node-sass": "^4.14.1",
    "optimize-css-assets-webpack-plugin": "^5.0.4",
    "postcss-loader": "^3.0.0",
    "pug": "^2.0.4",
    "pug-loader": "^2.4.0",
    "sass-loader": "^7.3.1",
    "ssh-webpack-plugin": "^0.1.8",
    "style-loader": "^0.23.1",
    "walk-sync": "^0.3.4",
    "webpack": "^4.44.2",
    "webpack-cli": "^3.3.12",
    "webpack-dev-server": "^3.11.1",
    "webpack-manifest-plugin": "^2.2.0",
    "webpack-merge": "^4.2.2"
  }
}
```


And here our configuration in Webpack :
```
exports.generateIconFonts = () => ({
	loader: 'postcss-loader',
	options: {
		plugins: (loader) => [new IconfontWebpackPlugin(loader)],
		sourceMap: true
	}
});
```

Have you noticed this issue ?
Do not hesitate if you need more information.

Thanks in advance for your help :)