ci(announce): replace webhook matrix with a bash loop

[Codelax]

No description provided.

[codecov-commenter]

Codecov Report

Merging #1585 (2bb4335) into master (adf2b1c) will increase coverage by 0.12%.
The diff coverage is 67.50%.

@@            Coverage Diff             @@
##           master    #1585      +/-   ##
==========================================
+ Coverage   67.54%   67.66%   +0.12%     
==========================================
  Files         139      139              
  Lines       22434    22493      +59     
==========================================
+ Hits        15152    15221      +69     
+ Misses       5975     5965      -10     
  Partials     1307     1307              

Impacted Files	Coverage Δ
scaleway/data_source_baremetal_offer.go	88.35% <61.22%> (-2.21%)	⬇️
scaleway/resource_k8s_cluster.go	84.80% <70.00%> (-0.23%)	⬇️
scaleway/helpers_baremetal.go	75.39% <78.94%> (+0.63%)	⬆️
scaleway/resource_container_token.go	79.20% <100.00%> (+0.20%)	⬆️
scaleway/resource_container.go	76.43% <0.00%> (+2.71%)	⬆️
scaleway/retryable_transport.go	77.50% <0.00%> (+7.50%)	⬆️
scaleway/helpers_container.go	94.78% <0.00%> (+10.43%)	⬆️

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