chore: bump threadx to v6.4.2

[fabiangottstein]

This will bump the minimum required cmake version and solve configuration issue with the new amp-devcontainer containing cmake 4.0.0.

[github-actions]

Dependency Review

The following issues were found:

• ✅ 0 vulnerable package(s)
• ✅ 0 package(s) with incompatible licenses
• ✅ 0 package(s) with invalid SPDX license definitions
• ⚠️ 1 package(s) with unknown licenses.

See the Details below.

License Issues

osal/threadx/CMakeLists.txt

Package	Version	License	Issue Type
eclipse-threadx/threadx	06dabb0ad0403f59889ce85eeb3d48dbd9d3759b	Null	Unknown License

OpenSSF Scorecard

Package	Version	Score	Details
unknown/eclipse-threadx/threadx	06dabb0ad0403f59889ce85eeb3d48dbd9d3759b	Unknown	Unknown

Scanned Files

• osal/threadx/CMakeLists.txt

[github-actions]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	12		0	0.05s
✅ CPP	clang-format	1014	4	0	6.3s
✅ DOCKERFILE	hadolint	2		0	0.14s
✅ JSON	jsonlint	7		0	0.18s
✅ JSON	prettier	7	0	0	0.65s
⚠️ MARKDOWN	markdownlint	6	0	4	1.33s
⚠️ MARKDOWN	markdown-link-check	6		1	120.96s
✅ MARKDOWN	markdown-table-formatter	6	0	0	0.2s
✅ REPOSITORY	checkov	yes		no	17.53s
✅ REPOSITORY	git_diff	yes		no	0.05s
✅ REPOSITORY	grype	yes		no	10.52s
✅ REPOSITORY	ls-lint	yes		no	0.06s
✅ REPOSITORY	secretlint	yes		no	6.14s
✅ REPOSITORY	trivy	yes		no	5.79s
✅ REPOSITORY	trivy-sbom	yes		no	0.08s
✅ REPOSITORY	trufflehog	yes		no	3.44s
⚠️ SPELL	lychee	137		1	21.16s
⚠️ YAML	prettier	22	1	1	1.14s
✅ YAML	v8r	22		0	9.4s
✅ YAML	yamllint	22		0	0.4s

See detailed report in MegaLinter reports

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud