@releng: updated o.a.s.api for o.a.s.api.scripting version update

* o.a.s.api.scripting was bummped by SLING-8737
diff --git a/pom.xml b/pom.xml
index 33388f0..0a6dda7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -132,7 +132,7 @@
         <dependency>
             <groupId>org.apache.sling</groupId>
             <artifactId>org.apache.sling.api</artifactId>
-            <version>2.20.0</version>
+            <version>2.21.0-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
         <!-- for ServiceUserMapped (SLING-4312) -->