[meta] Fix branch prefix #992

Job	Run time
Find all Bootstraps with a devcontainer spec	3s
Validate Bootstrap clojure	19s
Validate Bootstrap csharp	31s
Validate Bootstrap denojs	18s
Validate Bootstrap elixir	48s
Validate Bootstrap elm	37s
Validate Bootstrap fsharp	38s
Validate Bootstrap gleam	33s
Validate Bootstrap golang	47s
Validate Bootstrap haskell	1m 36s
Validate Bootstrap java	23s
Validate Bootstrap kotlin	53s
Validate Bootstrap nodejs	24s
Validate Bootstrap php	21s
Validate Bootstrap purescript	51s
Validate Bootstrap python	36s
Validate Bootstrap rescript	25s
Validate Bootstrap ruby	24s
Validate Bootstrap rust	33s
Validate Bootstrap scala2	46s
Validate Bootstrap scala3	44s
Validate Bootstrap typescript	41s
Validate Bootstrap zig	43s
	13m 54s

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