Upgrade from Chromium 91.0.4472.38 to Chromium 91.0.4472.57.

[mkarolin]

Minor Chromium bump.

https://chromium.googlesource.com/chromium/src/+log/91.0.4472.38..91.0.4472.57?pretty=fuller&n=10000

QA tests:

Check branding items
Check for version bump

Additional checks:

No specific code changes in Brave (only line number changes in patches).

[stephendonner]

Version bump is fine, but @LaurenWags found #15870, which is likely due to this, per @mkarolin

[stephendonner]

Verified PASSED using

Brave	1.26.22 Chromium: 91.0.4472.57 (Official Build) nightly (64-bit)
Revision	e3443317fa07f1e9997e4a9c738eddfefc3c0292-refs/branch-heads/4472_54@{#6}
OS	Windows 10 OS Version 2009 (Build 21382.1)

brave://version	brave://settings/help

[kjozwiak]

@brave/legacy_qa just a heads up, this issue will be replaced by #15973 once it lands into master and is uplifted into 1.25.x & 1.26.x. We can start running through the manual passes once we get a 1.25.x RC even it doesn't have #15973. We'll just run through a quick spot check.

[srirambv]

Verification passed on the following devices running 1.25.65

OnePlus 6T (Android 10)	Samsung Tab A (Android 10)