Fix Spring vulnerabilities

notification-core/pom.xml

@@ -159,6 +159,11 @@
             <groupId>org.springframework.security</groupId>
             <artifactId>spring-security-web</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.security</groupId>
+            <artifactId>spring-security-core</artifactId>
+            <version>5.7.5</version>
+        </dependency>
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>