fix(HMS-3760): Remove Bearer from Unleash auth header

[Victoremepunto]

Thanks for the contribution, make sure your commit message follows this subject style:

    type: brief summary up to 70 characters or
    type(scope): brief summary up to 70 characters

Type is required, scope is optional. Prefer lower-case and avoid dot at the end.

Find more info about types and scopes at:

https://github.com/RHEnVision/provisioning-backend#contributing

Take a moment to read our contributing and security guidelines:

https://github.com/RedHatInsights/secure-coding-checklist

Checklist

• all commit messages follows the policy above
• the change follows our security guidelines

[app-sre-bot]

Can one of the admins verify this patch?

[lzap]

Thanks!

[ezr-ondrej]

/retest

[lzap]

Merging because unleash is not tested in ephemeral I believe.