fix: firehose deliverystream controller check-diff

[smcavallo]

Signed-off-by: smcavallo smcavallo@hotmail.com

Description of your changes

fixes check-diff failure in recent builds

  M pkg/controller/firehose/deliverystream/zz_controller.go
02:03:14 [FAIL] There are uncommitted changes after running make generate. Please ensure you commit all generated files in this branch after running make generate.
make: *** [build/makelib/common.mk:446: check-diff] Error 1
Error: Process completed with exit code 2.

Fixes #

I have:

• Read and followed Crossplane's contribution process.
• Run make reviewable test to ensure this PR is ready for review.

How has this code been tested

[MisterMX]

LGTM. Thank you very much @smcavallo!