Update Rust crate tikv-jemallocator to 0.6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
tikv-jemallocator	dependencies	minor	0.5 -> 0.6

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Release Notes

tikv/jemallocator (tikv-jemallocator)

v0.6.0

• Fix build on riscv64gc-unknown-linux-musl (#​67) (#​75)
• Allow jemalloc-sys to be the default allocator on musl linux (#​70)
• Add Chimera Linux to gmake targets (#​73)
• Add profiling options to jemalloc-ctl (#​74)
• Fix jemalloc version not shown in API (#​77)
• Fix jemalloc stats is still enabled when stats feature is disabled (#​82)
• Fix duplicated symbol when build and link on aarch64-linux-android (#​83)
• Revise CI runner platform on macOS (#​86)
• Allow setting per-target env (#​91)
• Remove outdated clippy allows (#​94)
• Set MSRV to 1.71.0 (#​95)

Note since 0.6.0, if you want to use jemalloc stats, you have to enable the
feature explicitly.

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