obs-browser: Update version to 2.26.7

[RytoEX]

Description

• obsproject/obs-browser@f93477b - Fix local filepath on POSIX
• obsproject/obs-browser@b59127a - Update version to 2.26.7

Motivation and Context

Fix loading local files with browser source on POSIX systems.

See:

• Fix local filepath on POSIX obs-browser#513

How Has This Been Tested?

Tested with various local file URLs.

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code has been run through clang-format.
• I have read the contributing document.
• My code is not on the master branch.
• The code has been tested.
• All commit messages are properly formatted and commits squashed where appropriate.
• I have included updates to all appropriate documentation.