Log Message:
gallery-dl: Update to 1.20.3

Changes:
## 1.20.3
- Fixes to kemonoparty and twitter extractors.

## 1.20.2
- Add event extractor for twitter
- Add `--source-address` command-line option #2206
- Enable cards option on twitter extractor by default
- Several fixes

## 1.20.1
- Add newgrounds search extractor
- Restore `-d/--dest` functionality from before 1.20.0
- Change short option for `--directory` to `-D`
- Several fixes

## 1.20.0
- Improve several extractors
- Add a generic extractor
- Add `-d/--directory` and `-f/--filename` command-line options
- Add `--sleep-request` and `--sleep-extractor` command-line options
- Prefer yt-dlp over youtube-dl
- Rename `--write-infojson` to `--write-info-json`
- Several fixes

## 1.19.3
- Improve several extractors
- Several fixes
- Remove seisoparty

## 1.19.2
- Improve several extractors
- Several fixes

## 1.19.1 - 2021-10-24
- Improve several extractors
- Several fixes

## 1.19.0 - 2021-10-01
- Improve several extractors
- Implement a download progress indicator
- Implement a `page-reverse` option
- Implement a way to specify extended format strings
- Add a `--write-infojson` command-line option
- Several fixes