Reduce duplicate dependencies on windows-sys and windows-targets #6238
Description
As a result of updating to reqwest^0.13 and making rustls the default TLS implementation in #6053, a number of duplicate dependencies were introduced.
windows-sys and windows-targets, for instance, are duplicated due to rustls-platform-verifier using an outdated version of jni (see discussion here and here). Once rustls/rustls-platform-verifier#193 is merged and released, windows-sys and windows-targets can remove at least one of their duplicates.