Editor: Bump pinned hash for the Gutenberg repository.

This updates the pinned hash from the `gutenberg` from `2ee7ede6be6d4e55d5c7047394c5c4e0ea8d521d` to `3edafcc90fc4520939d69279e26ace69390582be`.

The following changes are included:

- RTC: Use activation hook to enable RTC by default (https://github.com/WordPress/gutenberg/pull/76736)
- Connectors: Align client-side registration API with server-side (https://github.com/WordPress/gutenberg/pull/76737)
- Connectors: Support non-AI provider types and add JS extensibility e2e test (https://github.com/WordPress/gutenberg/pull/76722)
- RTC: Add E2E "stress test" with complex interactions (https://github.com/WordPress/gutenberg/pull/76055)
- Button: restore specificity of high-contrast mode focus ring (https://github.com/WordPress/gutenberg/pull/76719) (https://github.com/WordPress/gutenberg/pull/76770)
- Connectors: Improve AI plugin button (https://github.com/WordPress/gutenberg/pull/76759)
- RTC: Use prepared queries instead of `*_post_meta` functions (https://github.com/WordPress/gutenberg/pull/76779)

A full list of changes can be found on GitHub: https://github.com/WordPress/gutenberg/compare/2ee7ede6be6d4e55d5c7047394c5c4e0ea8d521d…3edafcc90fc4520939d69279e26ace69390582be.

Log created with:

git log --reverse --format="- %s" 2ee7ede6be6d4e55d5c7047394c5c4e0ea8d521d..3edafcc90fc4520939d69279e26ace69390582be | sed 's|#\([0-9][0-9]*\)|https://github.com/WordPress/gutenberg/pull/\1|g; /github\.com\/WordPress\/gutenberg\/pull/!d' | pbcopy

See #64595.

git-svn-id: https://develop.svn.wordpress.org/trunk@62102 602fd350-edb4-49c9-b593-d223f7449a82