ETR01SDK-430: Fixed l3_chunk size in lt_l2_encrypted_cmd_*

[andreondra]

Description

Use correct size of the l3_chunk member according to the TROPIC01 API.

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[andreondra]

Valgrind CI fails because of some problem with packages. I think that's out of scope of this PR.

Edit: solved in #453

[Copilot]

Pull request overview

This PR fixes a bug in the L2 API struct definitions where the l3_chunk array size was hardcoded to 255 bytes instead of using the correct API-specified constant TR01_L2_CHUNK_MAX_DATA_SIZE (252 bytes). The hardcoded value was inconsistent with the TROPIC01 hardware API specification and with the actual usage throughout the codebase, where the constant was already being used for chunk size calculations.

Changes:

• Updated lt_l2_encrypted_cmd_req_t struct to use TR01_L2_CHUNK_MAX_DATA_SIZE instead of hardcoded 255
• Updated lt_l2_encrypted_cmd_rsp_t struct to use TR01_L2_CHUNK_MAX_DATA_SIZE instead of hardcoded 255
• Added changelog entry documenting the change

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/lt_l2_api_structs.h	Fixed l3_chunk array size in both request and response structs to use the correct constant (252) instead of hardcoded value (255)
CHANGELOG.md	Added entry for version 3.2.0 documenting the struct size change (with minor typo)

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

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