fix(redis): cluster list crash

[Laure-di]

close #3685

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 88.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 75.58%. Comparing base (127f1ab) to head (557dea6).
Report is 293 commits behind head on master.

Files with missing lines	Patch %	Lines
internal/human/specs.go	50.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3687   +/-   ##
=======================================
  Coverage   75.58%   75.58%           
=======================================
  Files         196      196           
  Lines       43417    43417           
=======================================
  Hits        32818    32818           
  Misses       9395     9395           
  Partials     1204     1204           

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[Codelax]

Still crash in another case

❯ scw redis endpoint get 18a0f371-0fa7-412d-a73d-ea85cb96ae3a   
---------------------------------------------------------------------------------------
An error occurred, we are sorry, please consider opening a ticket on github using: 'scw feedback bug'
Give us as many details as possible so we can reproduce the error and fix it.
---------------------------------------------------------------------------------------
interface conversion: interface {} is redis.Endpoint, not []*redis.Endpoint
stacktrace from panic: 
goroutine 1 [running]:
runtime/debug.Stack()
	/usr/local/go/src/runtime/debug/stack.go:24 +0x5e
main.cleanup(0xc0002d8460)
	/home/julescasteran/Documents/devtools/scaleway-cli/cmd/scw/main.go:42 +0xca
panic({0x17620c0?, 0xc000727230?})
	/usr/local/go/src/runtime/panic.go:914 +0x21f
github.com/scaleway/scaleway-cli/v2/internal/namespaces/redis/v1.redisEndpointsClusterGetMarshalerFunc({0x18bdde0?, 0xc0000d3240?}, 0x18bdde0?)
	/home/julescasteran/Documents/devtools/scaleway-cli/internal/namespaces/redis/v1/custom_cluster.go:164 +0x1db
github.com/scaleway/scaleway-cli/v2/internal/human.Marshal({0x18bdde0, 0xc0000d3240}, 0x1761d40?)
	/home/julescasteran/Documents/devtools/scaleway-cli/internal/human/marshal.go:61 +0x4db
github.com/scaleway/scaleway-cli/v2/internal/human.Marshal({0x16717c0, 0xc000677000}, 0xc000677000?)
	/home/julescasteran/Documents/devtools/scaleway-cli/internal/human/marshal.go:77 +0x392
github.com/scaleway/scaleway-cli/v2/internal/core.(*Printer).printHuman(0xc00015ccc0, {0x16717c0, 0xc000677000}, 0x0)
	/home/julescasteran/Documents/devtools/scaleway-cli/internal/core/printer.go:202 +0x198
github.com/scaleway/scaleway-cli/v2/internal/core.(*Printer).Print(0xc00015ccc0, {0x16717c0?, 0xc000677000?}, 0x199edc7?)
	/home/julescasteran/Documents/devtools/scaleway-cli/internal/core/printer.go:159 +0xef
github.com/scaleway/scaleway-cli/v2/internal/core.Bootstrap(0xc000b91e78)
	/home/julescasteran/Documents/devtools/scaleway-cli/internal/core/bootstrap.go:281 +0x156a
main.main()
	/home/julescasteran/Documents/devtools/scaleway-cli/cmd/scw/main.go:74 +0x33f