Prepare for release 1.6.7 (#284)

Signed-off-by: Oliver Chang <ochang@google.com>

Author: oliverchang

CHANGELOG.md

@@ -36,3 +36,4 @@
 - 2024-09-03 Released version 1.6.5. Added SuSE ecosystems and ELA, UBUNTU ID
   prefixes.
 - 2024-09-12 Released version 1.6.6. Add RHBA, RHEA, SUSE-OU prefixes.
+- 2024-09-16 Released version 1.6.7. JSON schema and minor text formatting changes.

docs/schema.md

@@ -8,7 +8,7 @@ aside:
 show_edit_on_github: true
 ---
 
-**Version 1.6.6 (Sep 12, 2024)**
+**Version 1.6.7 (Sep 16, 2024)**
 
 Original authors:
 - Oliver Chang (ochang@google.com)