BUILD-6326: add environment as optional input

[jayadeep-km-sonarsource]

BUILD-6326: add environment as optional input

This is required in repositories where environment is part of the OIDC sub claims. Otherwise the action will throw an error

OIDC error: the claim 'environment' cannot be `null` or empty. The following claims specified by the `include_claim_keys` setting must be set: repo, environment, ref. See <https://docs.github.com/en/actions/deployment/security-hardening-your-deployments/about-security-hardening-with-openid-connect#understanding-the-oidc-token> for more information.

More info in the ticket.

Tested in https://github.com/SonarSource/sonar-dummy/actions/runs/10996256142/job/30528993844