Bump aws-crt from 0.9.3 to 0.12.3

Bumps [aws-crt](https://github.com/awslabs/aws-crt-java) from 0.9.3 to 0.12.3.
- [Release notes](https://github.com/awslabs/aws-crt-java/releases)
- [Commits](awslabs/aws-crt-java@v0.9.3...v0.12.3)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -111,7 +111,7 @@
         <rxjava.version>2.1.9</rxjava.version>
         <commons-codec.verion>1.10</commons-codec.verion>
         <jmh.version>1.21</jmh.version>
-        <awscrt.version>0.9.3</awscrt.version>
+        <awscrt.version>0.12.3</awscrt.version>
 
         <!--Test dependencies -->
         <junit.version>4.12</junit.version>