Bootstrap5-3418548: Pulls the navbar header logo in as a native SVG for proper CSS styling.

Looks like SASS did some reformatting (indenting) on some of the chained/nested selectors, but the main part that was added was the svg selector in the .navbar-brand element.

https://git.drupalcode.org/issue/bootstrap5-3418548/-/merge_requests/new/diffs?merge_request%5Bsource_project_id%5D=132023&merge_request%5Bsource_branch%5D=3.0.x&merge_request%5Btarget_project_id%5D=66128&merge_request%5Btarget_branch%5D=3.0.x#126b0f8c1ec95fb3a2541745bfc21365b438d668_12437_12438