Add Changelog for v1.57.0

[duedares-rvj]

FEATURES:

• resource/auth0_network_acl_key – Add resource to manage HMAC-SHA256 signing keys for Network ACL HTTP Message Signature verification (EA only) (#1698)
• data-source/auth0_network_acl_key – Add data source to look up a Network ACL signing key by ID (EA only) (#1698)
• resource/auth0_network_acl – Add http_message_signature block to match/not_match in rule for HMAC signature-based ACL matching against Network ACL keys. (EA only) (#1698)
• data-source/auth0_network_acl / data-source/auth0_network_acls – Expose http_message_signature in read output when present. (EA only) (#1698)
• resource/auth0_network_acl / data-source/auth0_network_acl – Add match_all boolean to rule for unconditional matching regardless of traffic signals; mutually exclusive with match and not_match. (#1702)
• resource/auth0_client – Add client_id attribute to set a custom client identifier at creation time; changes force a new resource. (EA only) (#1697)
• resource/auth0_client – Add support to manage b2b_integration_configuration for Enterprise Connect with integration_type and sso_profiles (EA only) (#1699)
• data-source/auth0_client – Expose b2b_integration_configuration (EA only) (#1699)

ENHANCEMENTS:

• resource/auth0_prompt_screen_renderer – Add confirmation prompt and its confirmation screen (#1695)
• resource/auth0_connection – Add write-only options_client_secret_wo and options_client_secret_wo_version attributes so the connection client secret can be set without persisting it to state; mutually exclusive with options.client_secret (#1690)
• resource/auth0_email_template – Add auth_email_by_code as an allowed value for the template attribute (#1692)

[developerkunal]

LGTM