Remove sha1 dependency for azure_core_amqp

Commit 9c18ec3a90c pulled in `sha1`, which is forbidden by policy. This needs to be removed. Looking at https://docs.rs/crate/tungstenite/0.26.2/source/Cargo.toml, the `handshake` feature pulls it in. If not needed, you'll need to figure out a way to pull in just the features you need. If it is needed, this whole feature needs to be reworked to avoid it even if just fingerprinting.