info icon on P3A info bar should be updated

[LaurenWags]

Description

Found while testing #6285

The info "i" icon on the P3A notification bar is blue. This should be updated per discussion with @karenkliu

Steps to Reproduce

1. Have a profile on 1.0.1
2. Update to 1.1.x
3. See P3A info bar

Actual result:

Expected result:

info icon should be updated to be Brave style:
icon-info.svg.zip

Reproduces how often:

easily

Brave version (brave://version info)

1.1.18

Version/Channel Information:

• Can you reproduce this issue with the current release? n/a
• Can you reproduce this issue with the beta channel? yes
• Can you reproduce this issue with the dev channel? yes
• Can you reproduce this issue with the nightly channel? yes

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields? n/a
• Does the issue resolve itself when disabling Brave Rewards? n/a
• Is the issue reproducible on the latest version of Chrome? n/a

Miscellaneous Information:

cc @bsclifton @rebron @brave/legacy_qa

[kjozwiak]

Removing this from the 1.1.x milestone after discussing it with @bsclifton @rebron. This seems like a minor problem that can be fixed in the next version if needed. We don't have time to get this fixed and into a new RC as we're releasing tomorrow. Issue should be triaged to determine where it should land.