bump spring context version

Author: andponlin

haikudepotserver-parent/pom.xml

@@ -30,7 +30,7 @@
         <maven.compiler.target>11</maven.compiler.target>
         <maven.compiler.source>11</maven.compiler.source>
 
-        <spring.version>5.2.9.RELEASE</spring.version>
+        <spring.version>5.2.12.RELEASE</spring.version>
         <spring-security.version>5.4.4</spring-security.version>
 
         <postgresql.version>42.2.18</postgresql.version>