[stubsabot] Bump yt-dlp to 2026.7.4

Release: https://pypi.org/pypi/yt-dlp/2026.7.4
Repository: https://github.com/yt-dlp/yt-dlp
Typeshed stubs: https://github.com/python/typeshed/tree/main/stubs/yt-dlp
Diff: yt-dlp/yt-dlp@2026.03.17...2026.07.04

Stubsabot analysis of the diff between the two releases:
 - 3 public Python files have been added: `devscripts/update_requirements.py`, `yt_dlp/extractor/omnyfm.py`, `yt_dlp/extractor/zan.py`.
 - 1 file included in typeshed's stubs has been deleted: `yt_dlp/downloader/rtsp.py`.
 - 16 files included in typeshed's stubs have been modified or renamed.
 - Total lines of Python code added: 3506.
 - Total lines of Python code deleted: 8138.

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- Fix stubtest failures in another PR, then close this PR

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Author: stubsabot

stubs/yt-dlp/METADATA.toml

@@ -1,3 +1,3 @@
-version = "2026.3.17"
+version = "2026.7.4"
 upstream-repository = "https://github.com/yt-dlp/yt-dlp"
 dependencies = ["websockets"]