Fonts downloaded via Google Fonts are not identical to Google's source font repo

**Describe the bug**

Google Fonts does not offer the same files as the [source repo for the Material Design Icons](https://github.com/google/material-design-icons). I'll report the issue there as well, but given that Google Fonts is differing from the source, it may be very well be a mistake on Google Fonts, and not the other Google repo (so please, don't insta-close this issue report without first determining and communicating where the issue lies).

**To Reproduce**

STR:
1. Download Material Design Icons from [Google Fonts website](https://fonts.google.com/icons). If you can't figure out how to do this, don't feel bad. Please see the [UX issue I reported here](https://github.com/google/fonts/issues/8455).
2. Download Material Design Icons from the [source repo for the Material Design Icons](https://github.com/google/material-design-icons).
3. Extract the contents of the downloaded zip files.
4. Compare the version numbers of the font files. Notice they are the same (e.g. v1.017 for `MaterialIcons-Regular.ttf`).
5. Notice that the file sizes of the fonts aren't even close (e.g. 55% increase in size for the font file distributed via Google Fonts for `MaterialIcons-Regular.ttf` than distributed via the source repo).

**Expected behavior**

Fonts distributed via Google Fonts website to match source files.