[6.2] Use 6.2 branch for swiftlang/llvm-project

Author: Steelskin

default.xml

@@ -6,7 +6,7 @@
 
  <manifest-server url="http://stable.swift.dt.compnerd.org"/>
 
- <project remote="github" name="swiftlang/llvm-project" path="llvm-project" revision="stable/20240723" />
+ <project remote="github" name="swiftlang/llvm-project" path="llvm-project" revision="swift/release/6.2" />
  <project remote="github" name="swiftlang/indexstore-db" path="indexstore-db" />
  <project remote="github" name="swiftlang/sourcekit-lsp" path="sourcekit-lsp" />
  <project remote="github" name="swiftlang/swift" path="swift" />