PLUGINAPI-198 Update README for sqcb-26.6 and sqcb-26.7

Author: emma44-m

README.md

@@ -82,6 +82,8 @@ The following tables indicate which API versions plugins can find at runtime:
 
 | SonarQube              | Plugin API      |
 |------------------------|-----------------|
+| 26.7.0.124771          | 13.8.0.4399     |
+| 26.6.0.123539          | 13.7.0.4381     |
 | 26.5.0.122743          | 13.5.0.4319     |
 | 26.4.0.121862          | 13.5.0.4319     |
 | 26.3.0.120487          | 13.5.0.4319     |