SONAR-27393 Release 26.4

Author: lukasz-jarocki-sonarsource

README.md

@@ -80,6 +80,7 @@ The following tables indicate which API versions plugins can find at runtime:
 
 | SonarQube              | Plugin API      |
 |------------------------|-----------------|
+| 26.4.0.121862          | 13.5.0.4319     |
 | 26.3.0.120487          | 13.5.0.4319     |
 | 26.2.0.119303          | 13.4.3.4290     |
 | 26.1.0.118079          | 13.4.3.4290     |