MINOR: Add shebang to gradlewAll

[akatona84]

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Summary of testing strategy (including rationale) for the feature or bug fix. Unit and/or integration tests are expected for any behaviour change and system tests should be considered for larger changes.

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[akatona84]

@ijuma could you approve this change pls?

Python based build executor died because of it:

OSError: [Errno 8] Exec format error: './gradlewAll'

[akatona84]

@granthenke , could you take a look as well? Thanks!

[viktorsomogyi]

@ijuma would you please quickly review this small pr?

[akatona84]

@ijuma I've added the same shebang as gradlew has to gradlewAll. Could you check it pls? 🥺 🎅 🎄 😄

[akatona84]

@omkreddy , @ijuma could you take a look? pretty small change, pretty pls :)

[viktorsomogyi]

@mimaison would you please check this quickly? (I think the test failures are unrelated as this only affects the command line)