Switch reqwest and tokio-tungstenite to rustls-tls-webpki-roots (#7) #13

Job	Run time
cross-compile (ubuntu-latest, x86_64-unknown-linux-gnu)	50s
cross-compile (ubuntu-latest, aarch64-unknown-linux-gnu)	51s
cross-compile (ubuntu-latest, armv7-unknown-linux-gnueabihf)	50s
cross-compile (ubuntu-latest, x86_64-apple-darwin)	50s
cross-compile (ubuntu-latest, x86_64-pc-windows-msvc)	44s
cross-compile (macos-latest, x86_64-unknown-linux-gnu)	29s
cross-compile (macos-latest, aarch64-unknown-linux-gnu)	35s
cross-compile (macos-latest, armv7-unknown-linux-gnueabihf)	32s
cross-compile (macos-latest, x86_64-apple-darwin)	44s
cross-compile (macos-latest, x86_64-pc-windows-msvc)	28s
cross-compile (windows-latest, x86_64-unknown-linux-gnu)	32s
cross-compile (windows-latest, aarch64-unknown-linux-gnu)	36s
cross-compile (windows-latest, armv7-unknown-linux-gnueabihf)	33s
cross-compile (windows-latest, x86_64-apple-darwin)	33s
cross-compile (windows-latest, x86_64-pc-windows-msvc)	34s
	9m 41s

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