refactor: add bash shebang for shellcheck (#2286) #278

Job	Run time
tests / build-devbox (ubuntu-latest)	25s
tests / golangci-lint (ubuntu-latest)	36s
tests / Spell Check with Typos	4s
tests / build-devbox (macos-13)	1m 36s
tests / golangci-lint (macos-13)	5m 45s
tests / auto-nix-install (ubuntu-latest)	41s
tests / auto-nix-install (macos-13)	4m 3s
tests / test (not-main, ubuntu-latest, project-tests-only, 2.12.0)	7m 13s
tests / test-nix-versions (ubuntu-latest, 2.15.1)	48s
tests / test (not-main, ubuntu-latest, project-tests-only, 2.19.2)	7m 6s
tests / test-nix-versions (ubuntu-latest, 2.16.1)	43s
tests / test (not-main, ubuntu-latest, project-tests-only, 2.20.1)	9m 14s
tests / test-nix-versions (ubuntu-latest, 2.17.0)	35s
tests / test (not-main, ubuntu-latest, project-tests-off, 2.12.0)	8m 4s
tests / test-nix-versions (ubuntu-latest, 2.18.0)	34s
tests / test (not-main, ubuntu-latest, project-tests-off, 2.19.2)	7m 42s
tests / test-nix-versions (ubuntu-latest, 2.19.2)	33s
tests / test (not-main, ubuntu-latest, project-tests-off, 2.20.1)	7m 8s
tests / test-nix-versions (ubuntu-latest, 2.24.7)	47s
tests / test-nix-versions (macos-13, 2.15.1)	3m 4s
tests / test-nix-versions (macos-13, 2.16.1)	2m 21s
tests / test-nix-versions (macos-13, 2.17.0)	2m 19s
tests / test-nix-versions (macos-13, 2.18.0)	2m 9s
tests / test-nix-versions (macos-13, 2.19.2)	2m 45s
tests / test-nix-versions (macos-13, 2.24.7)	3m 4s
release	3m 48s
edge	0s
report-test-failures	0s
	1h 23m 7s

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