Bump MSRV to Rust 1.65.0 (#306) #460

Job	Run time
static_checks (ubuntu-latest, x86_64-unknown-linux-gnu)	17s
build_and_test (ubuntu-latest, x86_64-unknown-linux-gnu)	13s
static_checks (macos-latest, x86_64-apple-darwin)	21s
build_and_test (ubuntu-latest, x86_64-unknown-linux-musl)	17s
static_checks (windows-latest, x86_64-pc-windows-gnu)	38s
build_and_test (ubuntu-latest, i686-unknown-linux-gnu)	26s
static_checks (ubuntu-latest, wasm32-wasi)	14s
build_and_test (macos-latest, x86_64-apple-darwin)	19s
build_and_test (windows-latest, x86_64-pc-windows-gnu)	1m 43s
build_and_test (windows-latest, x86_64-pc-windows-msvc)	1m 35s
build_and_test (windows-latest, i686-pc-windows-msvc)	1m 34s
build_and_test (ubuntu-latest, wasm32-wasi)	14s
build_and_test (ubuntu-latest, x86_64-unknown-linux-gnu, 1.65.0)	1m 16s
build_and_test (macos-latest, x86_64-apple-darwin, 1.65.0)	1m 16s
build_and_test (windows-latest, x86_64-pc-windows-gnu, 1.65.0)	1m 55s
build_and_test (ubuntu-latest, wasm32-wasi, 1.65.0)	1m 17s
build_and_test (ubuntu-latest, x86_64-unknown-linux-gnu, nightly, true)	1m 39s
build_and_test (macos-latest, x86_64-apple-darwin, nightly, true)	1m 32s
build_and_test (windows-latest, x86_64-pc-windows-gnu, nightly, true)	3m 18s
build_and_test (ubuntu-latest, wasm32-wasi, nightly, true)	1m 39s
	21m 43s

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