chore(tools/releases/helm.sh): don't release Gateway-related CRDs

[michaelbeaumont]

Summary

We don't want to release these CRDs yet. There are also some parts of the RBAC resources that exist because of Gateway stuff which we could also remove, perhaps via a Helm value + templates but that's less crucial.

Closes #3475

[codecov-commenter]

Codecov Report

Merging #3571 (418917a) into master (2efb5d9) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3571   +/-   ##
=======================================
  Coverage   51.56%   51.56%           
=======================================
  Files         917      917           
  Lines       55563    55563           
=======================================
+ Hits        28649    28651    +2     
+ Misses      24634    24625    -9     
- Partials     2280     2287    +7     

Impacted Files	Coverage Δ
pkg/test/grpc/clientstream.go	84.00% <0.00%> (-8.00%)	⬇️
pkg/core/runtime/component/component.go	81.13% <0.00%> (-7.55%)	⬇️
pkg/kds/client/sink.go	54.05% <0.00%> (-5.41%)	⬇️
pkg/core/resources/manager/cache.go	83.11% <0.00%> (-2.60%)	⬇️
pkg/mads/v1/client/client.go	41.25% <0.00%> (-2.50%)	⬇️
pkg/plugins/leader/postgres/leader_elector.go	97.87% <0.00%> (-2.13%)	⬇️
api/observability/v1/mads.pb.go	34.53% <0.00%> (-1.04%)	⬇️
pkg/xds/generator/direct_access_proxy_generator.go	86.95% <0.00%> (+1.08%)	⬆️
pkg/core/resources/model/rest/resource.go	69.23% <0.00%> (+1.28%)	⬆️
pkg/dns/vips_allocator.go	73.75% <0.00%> (+1.41%)	⬆️
... and 3 more

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