Bump Spring version

Author: sapessi

aws-serverless-java-container-spring/pom.xml

@@ -16,7 +16,7 @@
     </parent>
 
     <properties>
-        <spring.version>5.1.8.RELEASE</spring.version>
+        <spring.version>5.1.9.RELEASE</spring.version>
         <springboot.version>1.5.21.RELEASE</springboot.version>
         <spring-security.version>5.1.5.RELEASE</spring-security.version>
         <jackson.version>2.9.9.3</jackson.version>

aws-serverless-spring-archetype/src/main/resources/archetype-resources/pom.xml

@@ -16,7 +16,7 @@
     <properties>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
-        <spring.version>5.1.1.RELEASE</spring.version>
+        <spring.version>5.1.9.RELEASE</spring.version>
         <junit.version>4.12</junit.version>
         <log4j.version>2.8.2</log4j.version>
     </properties>

samples/spring/pet-store/pom.xml

@@ -26,7 +26,7 @@
     <properties>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
-        <spring.version>5.1.1.RELEASE</spring.version>
+        <spring.version>5.1.9.RELEASE</spring.version>
         <junit.version>4.12</junit.version>
         <log4j.version>2.8.2</log4j.version>
     </properties>