v0.27.6

[0.27.6] - 10/06/2023

Fixes

• Fix codegen of services with no operations

Miscellaneous

• Relocate TlsVersion to the net package.
• Refactor codegen to place serialization and deserialization code into the serde package rather than the transform package.
• Make ByteArrayContent and friends internal and force consumers to go through companion object convenience functions.