Fixed unit-test/hk_utils_tests.c for the address-sanitizer

[myc-yang]

Checklist (Please check before submitting)

• I reviewed the Contributing Guide.
• I signed and emailed the appropriate Contributor License Agreement to GSFC-SoftwareRelease@mail.nasa.gov and copied cfs-program@lists.nasa.gov.

Describe the contribution

• Fixes Address sanitizer flagged stack buffer overflows in hk_utils_tests.c #71
  • In Test_HK_ProcessIncomingHkData_LengthOkEqual(void) and void Test_HK_ProcessIncomingHkData_LengthOkGreater(void), changed type of OutputPkt to an array of 100 unsigned bytes

Testing performed
Steps taken to test the contribution:

1. Unit tests passed with address sanitizer enabled

Expected behavior changes
A clear and concise description of how this contribution will change behavior and level of impact.

• Unit tests will now pass when address-sanitizer is enabled

System(s) tested on

• OS: Ubuntu 20.04.6

[dzbaker]

CCB 5 June 2025: Recommendation to make union containing buffer_t, adding space after with uint8[] (providing rationale for length of array). This will eliminate the need for casting.