feat(connector): add support for session update flow for klarna

[swangi-kumari]

Type of Change

• Bugfix
• New feature
• Enhancement
• Refactoring
• Dependency updates
• Documentation
• CI/CD

Description

add support for session update flow for klarna

Additional Changes

• This PR modifies the API contract
• This PR modifies the database schema
• This PR modifies application configuration/environment variables

Motivation and Context

How did you test it?

Checklist

• I formatted the code cargo +nightly fmt --all
• I addressed lints thrown by cargo clippy
• I reviewed the submitted code
• I added unit tests for my changes where possible

[semanticdiff-com]

Review changes with SemanticDiff.

Analyzed 31 of 31 files.

Overall, the semantic diff is 5% smaller than the GitHub diff.

File Information

	Filename	Status
✔️	crates/router/tests/connectors/utils.rs	Analyzed
✔️	crates/router/src/types.rs	14.52% smaller
✔️	crates/router/src/types/api/verify_connector.rs	Analyzed
✔️	crates/router/src/core/payments.rs	Analyzed
✔️	crates/router/src/core/payments/flows.rs	Analyzed
✔️	crates/router/src/core/payments/transformers.rs	10.52% smaller
✔️	crates/router/src/core/payments/operations/payment_approve.rs	Analyzed
✔️	crates/router/src/core/payments/operations/payment_cancel.rs	Analyzed
✔️	crates/router/src/core/payments/operations/payment_capture.rs	Analyzed
✔️	crates/router/src/core/payments/operations/payment_complete_authorize.rs	Analyzed
✔️	crates/router/src/core/payments/operations/payment_confirm.rs	Analyzed
✔️	crates/router/src/core/payments/operations/payment_create.rs	Analyzed
✔️	crates/router/src/core/payments/operations/payment_reject.rs	Analyzed
✔️	crates/router/src/core/payments/operations/payment_response.rs	Analyzed
✔️	crates/router/src/core/payments/operations/payment_session.rs	Analyzed
✔️	crates/router/src/core/payments/operations/payment_start.rs	Analyzed
✔️	crates/router/src/core/payments/operations/payment_status.rs	Analyzed
✔️	crates/router/src/core/payments/operations/payment_update.rs	Analyzed
✔️	crates/router/src/core/payments/operations/payments_incremental_authorization.rs	Analyzed
✔️	crates/router/src/core/payments/operations/tax_calculation.rs	72.42% smaller
✔️	crates/router/src/core/payments/flows/session_update_flow.rs	Analyzed
✔️	crates/router/src/connector/klarna.rs	Analyzed
✔️	crates/router/src/connector/klarna/transformers.rs	13.11% smaller
✔️	crates/hyperswitch_interfaces/src/types.rs	49.68% smaller
✔️	crates/hyperswitch_domain_models/src/router_request_types.rs	9.8% smaller
✔️	crates/hyperswitch_domain_models/src/router_response_types.rs	Analyzed
✔️	crates/hyperswitch_connectors/src/connectors/taxjar.rs	Analyzed
✔️	crates/common_enums/src/enums.rs	Analyzed
✔️	crates/api_models/src/payments.rs	Analyzed
✔️	api-reference-v2/openapi_spec.json	Analyzed
✔️	api-reference/openapi_spec.json	Analyzed