Log Message:
gallery-dl: Update to 1.16.2

Changes:
1.16.2
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### Additions
- [derpibooru] add `search` and `gallery` extractors (#862)
- [foolfuuka] add `board` and `search` extractors (#1044, #1174)
- [gfycat] add `date` metadata field (#1138)
- [pinterest] add support for getting all boards of a user (#1205)
- [sankaku] add support for book searches (#1204)
- [twitter] fetch media from pinned tweets (#1203)
- [wikiart] add extractor for single paintings (#1233)
- [downloader:http] add MIME type and signature for `.ico` files (#1211)
- add a `d` format string conversion for timestamp values
- add `"ascii"` as a special `path-restrict` value

### Fixes
- [hentainexus] fix extraction (#1234)
- [instagram] categorize single highlight URLs as `highlights` (#1222)
- [redgifs] fix search results
- [twitter] fix login with username & password
- [twitter] fetch tweets from `homeConversation` entries