upgrade maven-compiler-plugin to 3.14.1 (#6461)

Co-authored-by: Debora N. Ito <476307+debora-ito@users.noreply.github.com>

Author: sullis

.changes/next-release/bugfix-AWSSDKforJavav2-fd8f698.json

@@ -0,0 +1,6 @@
+{
+    "type": "bugfix",
+    "category": "AWS SDK for Java v2",
+    "contributor": "sullis",
+    "description": "upgrade maven-compiler-plugin to 3.14.1"
+}

pom.xml

@@ -154,7 +154,7 @@
 
         <!-- build plugin dependencies-->
         <maven.surefire.version>3.1.2</maven.surefire.version>
-        <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
+        <maven-compiler-plugin.version>3.14.1</maven-compiler-plugin.version>
         <maven-checkstyle-plugin.version>3.1.2</maven-checkstyle-plugin.version>
         <maven-failsafe-plugin.version>3.0.0-M5</maven-failsafe-plugin.version>
         <maven-jar-plugin.version>3.3.0</maven-jar-plugin.version>