bug: project version is being renamed before finishing the attestation

[jiparis]

In the workflow release.yaml, the Promote Chainloop Project Version step is being executed before chainloop att push. This could lead to undesired effects in policy executions, since policies during att push are injected the former project version, not the modified one.

Instead, the process should guarantee version integrity during the whole attestation process. Renaming should occur after the attestation has ben pushed (or before it's started).