Update dependencies

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

sentinel-demo/sentinel-demo-annotation-spring-aop/pom.xml

@@ -12,7 +12,7 @@
     <artifactId>sentinel-demo-annotation-spring-aop</artifactId>
 
     <properties>
-        <spring.boot.version>2.0.4.RELEASE</spring.boot.version>
+        <spring.boot.version>2.0.5.RELEASE</spring.boot.version>
     </properties>
 
     <dependencies>

sentinel-extension/sentinel-annotation-aspectj/pom.xml

@@ -13,7 +13,7 @@
     <packaging>jar</packaging>
 
     <properties>
-        <aspectj.version>1.9.1</aspectj.version>
+        <aspectj.version>1.9.2</aspectj.version>
     </properties>
 
     <dependencies>

sentinel-extension/sentinel-datasource-nacos/pom.xml

@@ -13,7 +13,7 @@
     <packaging>jar</packaging>
 
     <properties>
-        <nacos.version>0.3.0</nacos.version>
+        <nacos.version>0.4.0</nacos.version>
     </properties>
 
     <dependencies>

sentinel-transport/sentinel-transport-netty-http/pom.xml

@@ -11,6 +11,10 @@
     <artifactId>sentinel-transport-netty-http</artifactId>
     <packaging>jar</packaging>
 
+    <properties>
+        <netty.version>4.1.31.Final</netty.version>
+    </properties>
+
     <dependencies>
         <dependency>
             <groupId>com.alibaba.csp</groupId>
@@ -20,7 +24,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-all</artifactId>
-            <version>4.1.26.Final</version>
+            <version>${netty.version}</version>
         </dependency>
         <dependency>
             <groupId>com.alibaba</groupId>