The setup-gradle action tries to get a short-lived access token given the supplied Develocity access key.
This key can be passed either with the `DEVELOCITY_ACCESS_KEY` env var or via the `develocity-access-key` input parameter.
If a token can be retrieved, then the `DEVELOCITY_ACCESS_KEY` env var will be set to the token.
Otherwise the `DEVELOCITY_ACCESS_KEY` will be set to a blank string, to avoid a leak.
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Co-authored-by: daz <daz@gradle.com>