ci: use rust toolchain v1.71.0 #2545

Job	Run time
Cancel previous runs	4s
Audit and format	44s
Build Clarity REPL Distribution	7m 53s
Get Release Info	6s
Build Clarinet Distributions (ubuntu-latest, linux, x86_64-unknown-linux-gnu, x64, glibc)	12m 1s
Build Clarinet Distributions (windows-latest, windows, x86_64-pc-windows-msvc, x64)	11m 46s
Build Clarinet Distributions (macos-latest, darwin, x86_64-apple-darwin, x64)	12m 0s
Build Clarinet Distributions (macos-latest, darwin, aarch64-apple-darwin, arm64)	11m 56s
Build Stacks Devnet JS Distributions (ubuntu-latest, linux, x86_64-unknown-linux-gnu, x64, glibc)	10m 10s
Build Stacks Devnet JS Distributions (windows-latest, windows, x86_64-pc-windows-msvc, x64)	4s
Build Stacks Devnet JS Distributions (macos-latest, darwin, x86_64-apple-darwin, x64)	6s
Build Stacks Devnet JS Distributions (macos-latest, darwin, aarch64-apple-darwin, arm64)	6s
Build Stacks Devnet JS Distributions (ubuntu-latest, linux, x86_64-unknown-linux-musl, x64, musl)	25s
Create ${{ matrix.name }} Docker Image	1s
Release	1s
	1h 7m 23s

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