v1.34.0

Release v1.34.0

Features

• Proxy support: the provider now honors the standard HTTP_PROXY /
  HTTPS_PROXY / NO_PROXY environment variables when connecting to the
  Portainer endpoint. No-op when unset, so existing setups are unaffected. (#131)
• portainer_stack: new source_id attribute for Portainer 2.43 STS, which
  replaced shared Git credentials with the Sources model. Both source_id
  (2.43+) and repository_git_credential_id (< 2.43) are sent, so one
  configuration works against old and new Portainer. (#132)

Fixes

• portainer_stack: deploying a Git stack against Portainer 2.43 STS no
  longer fails with "Password must be specified when authentication is enabled";
  set source_id (or fall back to inline repository_username/password). (#132)

Internal / Maintenance

• Centralized duplicated auth-header and d.Set handling into shared helpers
  (setAuthHeader, setFields); no behavior change.
• Raised unit-test coverage from ~77% to 85%.