Fix changelog for v1.2.4

Author: AlteredCoder

CHANGELOG.md

@@ -14,7 +14,7 @@ Splunk app: i.e., all files and folders except ones that are ignored by the `.sl
 
 ## [1.2.4](https://github.com/crowdsecurity/crowdsec-splunk-app/releases/tag/v1.2.4) - 2025-12-19
 
-[_Compare with previous release_](https://github.com/crowdsecurity/crowdsec-splunk-app/compare/v1.2.2...v1.2.4)
+[_Compare with previous release_](https://github.com/crowdsecurity/crowdsec-splunk-app/compare/v1.2.3...v1.2.4)
 
 ### Changed