Use SwiftSyntax 6.3 pre-release 2025-09-15

[SimplyDanny]

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[SwiftLintBot]

	18 Messages
📖	Building this branch resulted in a binary size of 26926.66 KiB vs 26894.15 KiB when built on main (0% larger).
📖	Linting Aerial with this PR took 0.81 s vs 0.81 s on main (0% slower).
📖	Linting Alamofire with this PR took 1.02 s vs 1.0 s on main (2% slower).
📖	Linting Brave with this PR took 6.92 s vs 6.93 s on main (0% faster).
📖	Linting DuckDuckGo with this PR took 20.87 s vs 20.85 s on main (0% slower).
📖	Linting Firefox with this PR took 10.65 s vs 10.64 s on main (0% slower).
📖	Linting Kickstarter with this PR took 7.73 s vs 7.66 s on main (0% slower).
📖	Linting Moya with this PR took 0.45 s vs 0.44 s on main (2% slower).
📖	Linting NetNewsWire with this PR took 2.37 s vs 2.36 s on main (0% slower).
📖	Linting Nimble with this PR took 0.63 s vs 0.63 s on main (0% slower).
📖	Linting PocketCasts with this PR took 7.31 s vs 7.1 s on main (2% slower).
📖	Linting Quick with this PR took 0.4 s vs 0.4 s on main (0% slower).
📖	Linting Realm with this PR took 3.46 s vs 3.47 s on main (0% faster).
📖	Linting Sourcery with this PR took 1.84 s vs 1.84 s on main (0% slower).
📖	Linting Swift with this PR took 4.27 s vs 4.27 s on main (0% slower).
📖	Linting VLC with this PR took 1.12 s vs 1.12 s on main (0% slower).
📖	Linting Wire with this PR took 17.14 s vs 17.17 s on main (0% faster).
📖	Linting WordPress with this PR took 11.22 s vs 11.21 s on main (0% slower).

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