dashboard: Update Spring Boot starter to 2.2.13.RELEASE

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

Author: sczyh30

sentinel-dashboard/pom.xml

@@ -14,7 +14,7 @@
 
     <properties>
         <resource.delimiter>@</resource.delimiter>
-        <spring.boot.version>2.0.5.RELEASE</spring.boot.version>
+        <spring.boot.version>2.2.13.RELEASE</spring.boot.version>
         <curator.version>4.0.1</curator.version>
     </properties>
 
@@ -63,7 +63,7 @@
         <dependency>
             <groupId>log4j</groupId>
             <artifactId>log4j</artifactId>
-            <version>1.2.14</version>
+            <version>1.2.17</version>
         </dependency>
 
         <dependency>