Changed the build image for the pipelines

* The previously selected image include Node 10 & 12 which does not meet the project requirements.

Author: josebagar

lib/pipeline-stack.ts

@@ -74,7 +74,7 @@ export class PipelineStack extends Stack {
         },
       }),
       environment: {
-        buildImage: LinuxBuildImage.AMAZON_LINUX_2_ARM_2,
+        buildImage: LinuxBuildImage.STANDARD_6_0,
       },
       encryptionKey: key
     });
@@ -101,7 +101,7 @@ export class PipelineStack extends Stack {
         },
       }),
       environment: {
-        buildImage: LinuxBuildImage.AMAZON_LINUX_2_ARM_2,
+        buildImage: LinuxBuildImage.STANDARD_6_0,
       },
       encryptionKey: key
     });