Prepare for 1.15.1 release #2340

Job	Run time
Tests / Examples	13s
Build / Clippy	21s
Build / Embedded	14s
Tests / Miri	1m 44s
Build / MSRV	2m 28s
Build / No deps	1m 0s
Tests / OS: macos-latest - stable-x86_64-apple-darwin	7m 12s
Tests / Stable	35s
Tests / OS: ubuntu-latest - stable-x86_64-gnu	1m 32s
Tests / WebAssembly (WASI)	43s
Tests / WebAssembly (wasm-bindgen)	1m 0s
Tests / OS: windows-latest - stable-x86_64-gnu	3m 36s
Tests / OS: windows-latest - stable-x86_64-msvc	3m 23s
Tests / OS: macos-latest - beta-x86_64-apple-darwin	9m 18s
Tests / OS: ubuntu-latest - beta-x86_64-gnu	1m 36s
Tests / OS: windows-latest - beta-x86_64-gnu	3m 22s
Tests / OS: windows-latest - beta-x86_64-msvc	2m 58s
Tests / OS: macos-latest - nightly-x86_64-apple-darwin	9m 3s
Tests / OS: ubuntu-latest - nightly-x86_64-gnu	1m 35s
Tests / OS: windows-latest - nightly-x86_64-gnu	3m 33s
Tests / OS: windows-latest - nightly-x86_64-msvc	3m 3s
	58m 29s

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