升级druid到最新版本v1.2.4

pom.xml

@@ -19,7 +19,7 @@
         <maven-jar-plugin.version>3.1.1</maven-jar-plugin.version>
         <shiro.version>1.7.0</shiro.version>
         <thymeleaf.extras.shiro.version>2.0.0</thymeleaf.extras.shiro.version>
-        <druid.version>1.2.2</druid.version>
+        <druid.version>1.2.4</druid.version>
         <bitwalker.version>1.21</bitwalker.version>
         <kaptcha.version>2.3.2</kaptcha.version>
         <swagger.version>2.9.2</swagger.version>