Rollup of 7 pull requests

[fmease]

Successful merges:

• Don't require method impls for methods with Self:Sized bounds for impls for unsized types #135480 (Don't require method impls for methods with Self:Sized bounds for impls for unsized types)
• Teach structured errors to display short Ty<'_> #137201 (Teach structured errors to display short Ty<'_>)
• Use as_chunks in analyze_source_file_sse2 #137360 (Use as_chunks in analyze_source_file_sse2)
• downgrade bootstrap cc #137460 (downgrade bootstrap cc)
• Update compiler-builtins to 0.1.148 #137515 (Update compiler-builtins to 0.1.148)
• use stage 2 on cargo and clippy tests when possible #137522 (use stage 2 on cargo and clippy tests when possible)
• Revert accidental cargo submodule update #137597 (Revert accidental cargo submodule update)

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