v0.93.3

Oceananigans v0.93.3

Diff since v0.93.2

Merged pull requests:

• Add test of enzyme flux bc (#3643) (@jlk9)
• Fix docs for VectorInvariant and WENOVectorInvariant (#3866) (@navidcy)
• Use on_architecture more liberally with boundary conditions (#3893) (@glwagner)
• Update examples to use new fluxes notation (#3907) (@glwagner)

Closed issues:

• "GPU enzyme tests are on the CPU (#3909)