Fixing a low severity issue with parsing certificate Common Name (CN) (#364)

Author: sbSteveK

README.md

@@ -90,8 +90,8 @@ mvn versions:use-latest-versions -Dincludes="software.amazon.awssdk.crt*"
 mkdir sdk-workspace
 cd sdk-workspace
 # Clone the CRT repository
-#     (Use the latest version of the CRT here instead of "v0.21.3")
-git clone --branch v0.21.3 --recurse-submodules https://github.com/awslabs/aws-crt-java.git
+#     (Use the latest version of the CRT here instead of "v0.21.4")
+git clone --branch v0.21.4 --recurse-submodules https://github.com/awslabs/aws-crt-java.git
 cd aws-crt-java
 # Compile and install the CRT
 mvn install -Dmaven.test.skip=true
@@ -112,8 +112,8 @@ NOTE: The shadow sample does not currently complete on android due to its depend
 mkdir sdk-workspace
 cd sdk-workspace
 # Clone the CRT repository
-#     (Use the latest version of the CRT here instead of "v0.21.3")
-git clone --branch v0.21.3 --recurse-submodules https://github.com/awslabs/aws-crt-java.git
+#     (Use the latest version of the CRT here instead of "v0.21.4")
+git clone --branch v0.21.4 --recurse-submodules https://github.com/awslabs/aws-crt-java.git
 # Compile and install the CRT for Android
 cd aws-crt-java/android
 ./gradlew connectedCheck # optional, will run the unit tests on any connected devices/emulators
@@ -138,11 +138,11 @@ repositories {
 }
 
 dependencies {
-    implementation 'software.amazon.awssdk.crt:android:0.21.3'
+    implementation 'software.amazon.awssdk.crt:android:0.21.4'
 }
 ```
 
-Replace `0.21.3` in `software.amazon.awssdk.crt:android:0.21.3` with the latest version of the CRT.
+Replace `0.21.4` in `software.amazon.awssdk.crt:android:0.21.4` with the latest version of the CRT.
 Look up the latest CRT version here: https://github.com/awslabs/aws-crt-java/releases
 
 #### Caution

android/iotdevicesdk/build.gradle

@@ -91,7 +91,7 @@ repositories {
 }
 
 dependencies {
-    api 'software.amazon.awssdk.crt:aws-crt-android:0.21.3'
+    api 'software.amazon.awssdk.crt:aws-crt-android:0.21.4'
     implementation 'org.slf4j:slf4j-api:1.7.30'
     implementation 'com.google.code.gson:gson:2.9.0'
     implementation 'androidx.appcompat:appcompat:1.1.0'

sdk/pom.xml

@@ -42,7 +42,7 @@
     <dependency>
       <groupId>software.amazon.awssdk.crt</groupId>
       <artifactId>aws-crt</artifactId>
-      <version>0.21.3</version>
+      <version>0.21.4</version>
     </dependency>
     <dependency>
       <groupId>org.slf4j</groupId>