Eclipse ThreadX FileX 6.4.1

What's Changed

• Delete SECURITY.md by @ericwol-msft in #43
• Update copyright. by @bo-ms in #45
• Update version id string. by @bo-ms in #46
• Update version number to 6.4.1 by @TiejunMS in #49
• Add revision history file. by @bo-ms in #50

New Contributors

• @ericwol-msft made their first contribution in #43
• @bo-ms made their first contribution in #45
• @TiejunMS made their first contribution in #49

Full Changelog: https://github.com/eclipse-threadx/filex/commits/v6.4.1_rel