OpenIG-9707: Use 5.0.4 of fapi-pep-as (#48)

Author: shaunharrisonFR

pom.xml

@@ -46,7 +46,7 @@
     </parent>
 
     <properties>
-        <secure-api-gateway.fapi-pep-as.version>5.0.4-SNAPSHOT</secure-api-gateway.fapi-pep-as.version>
+        <secure-api-gateway.fapi-pep-as.version>5.0.4</secure-api-gateway.fapi-pep-as.version>
         <openig.version>2025.9.0</openig.version>
         <nimbus-jose.version>9.41.1</nimbus-jose.version>
         <bouncy-castle.version>1.78.1</bouncy-castle.version>