[iOS] Update JitsiSDK to 8.6.3.

[iccub]

Resolves brave/brave-browser#36353

This SDK updated fixes few bugs within the Brave Talk native

Submitter Checklist:

• I confirm that no security/privacy review is needed and no other type of reviews are needed, or that I have requested them
• There is a ticket for my issue
• Used Github auto-closing keywords in the PR description above
• Wrote a good PR/commit description
• Squashed any review feedback or "fixup" commits before merge, so that history is a record of what happened in the repo, not your PR
• Added appropriate labels (QA/Yes or QA/No; release-notes/include or release-notes/exclude; OS/...) to the associated issue
• Checked the PR locally:
  • npm run test -- brave_browser_tests, npm run test -- brave_unit_tests wiki
  • npm run presubmit wiki, npm run gn_check, npm run tslint
• Ran git rebase master (if needed)

Reviewer Checklist:

• A security review is not needed, or a link to one is included in the PR description
• New files have MPL-2.0 license header
• Adequate test coverage exists to prevent regressions
• Major classes, functions and non-trivial code blocks are well-commented
• Changes in component dependencies are properly reflected in gn
• Code follows the style guide
• Test plan is specified in PR before merging

After-merge Checklist:

• The associated issue milestone is set to the smallest version that the
  changes has landed on
• All relevant documentation has been updated, for instance:
  • https://github.com/brave/brave-browser/wiki/Deviations-from-Chromium-(features-we-disable-or-remove)
  • https://github.com/brave/brave-browser/wiki/Proxy-redirected-URLs
  • https://github.com/brave/brave-browser/wiki/Fingerprinting-Protections
  • https://github.com/brave/brave-browser/wiki/Brave%E2%80%99s-Use-of-Referral-Codes
  • https://github.com/brave/brave-browser/wiki/Web-Compatibility-Exceptions-in-Brave
  • https://github.com/brave/brave-browser/wiki/QA-Guide
  • https://github.com/brave/brave-browser/wiki/P3A

Test Plan:

Sanity test the Brave Talk on iOS.

[iccub]

note: please merge once QA finishes the verifications

[kjozwiak]

Verifications PASSED on various iOS devices as per brave/qa-resources#559 (comment), brave/qa-resources#559 (comment), brave/qa-resources#559 (comment) & brave/qa-resources#559 (comment).

[soner-yuksel]

Verifications PASSED on various iOS devices as per brave/qa-resources#559 (comment), brave/qa-resources#559 (comment), brave/qa-resources#559 (comment) & brave/qa-resources#559 (comment).

Merging since the validation is passed and will uplift to 1.63 - 1.64

[hffvld]

Verified on iPhone 14 using version(s):

Device/OS: iPhone 14 / iOS 17.4 (21E217)
Brave build: 1.65 (45)
BraveCore: 1.65.45 (122.0.6261.94)

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ACTUAL RESULTS:

• Ensured talk.brave.com is working
• Ensured using different orientations in calls does not cause problems
• Ensured Car Mode and Low Bandwidth Mode are working
• Ensured talk.brave.software is working
• Ensured PIP is working

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1	2	3	4	5

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Verification passed on iPhone 13 with iOS 17.4

• Verified able to create and join Web3 Talk with ETH NFT gating
• Verified able to create and join Web3 Talk with ETH POAP gating
• Verified able to create and join Web3 Talk with BAT gating
• Verified able to create and join Web3 Talk with SOL NFT gating
• Verified unable to join Web3 Talk when participant doesn't have the required NFT/POAP/BAT