Bump MSRV to 1.74.0 #545

Job	Run time
format	14s
Clippy	52s
cargo-build (aarch64-linux-android, ubuntu-22.04)	3m 29s
cargo-test (ubuntu-22.04, default, stable)	2m 8s
cargo-build (armv7-linux-androideabi, ubuntu-22.04)	3m 42s
cargo-test (macos-12, default, stable)	3m 23s
cargo-build (i686-linux-android, ubuntu-22.04)	3m 18s
cargo-test (windows-2019, default, stable)	4m 52s
cargo-build (x86_64-linux-android, ubuntu-22.04)	3m 7s
cargo-test (ubuntu-22.04, beta)	3m 11s
cargo-build (x86_64-unknown-linux-musl, ubuntu-22.04)	2m 43s
cargo-test (ubuntu-22.04, blocking)	3m 20s
cargo-build (aarch64-apple-ios, macos-12)	1m 56s
cargo-test (ubuntu-22.04, blocking,beta)	3m 27s
cargo-test (ubuntu-22.04, tls-rustls --no-default-features)	2m 46s
cargo-test (ubuntu-22.04, tls-vendored-openssl --no-default-features)	3m 39s
cargo-test (ubuntu-22.04, beta, default)	2m 47s
cargo-test (ubuntu-22.04, 1.74.0, default)	2m 58s
	51m 52s

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