make Bash scripts more portable by using #!/usr/bin/env bash as the "shebang"

[das-g]

Make Bash scripts more portable by using #!/usr/bin/env bash as the "shebang", as not all systems that have Bash place it at /bin/bash. (E.g., /bin/bash won't work out-of-the-box on NixOS.)

See this answer to "What is the preferred Bash shebang?" and note that your existing ./gradlew already leads by example:

threema-android/gradlew

Line 1 in c3eb92a

#!/usr/bin/env bash

Description

Replace #!/bin/bash with #!/usr/bin/env bash for all three Bash scripts in ./scripts/

Checklist

• I've signed the Contributor License Agreement
• All changes in this pull request were created made by me, I own the full copyright for all these changes
• These changes are sufficiently non-trivial to warrant copyright protection (IANAL;TINLA)
• nos esse quasi nanos gigantum humeris insidentes

[threema-fabian]

Thanks for your contribution @das-g! The /usr/bin/env bash "shebang" change you suggest was already integrated into our internal codebase recently, and will be published with the next release.

Best, Fabian