chore: update node version in version step (#181)

Author: kessplas

codebuild/release/version.yml

@@ -14,7 +14,7 @@ env:
 phases:
   install:
     commands:
-      - n 18 # semantic-release wants 18, the image only goes up to 16
+      - n 20 # semantic-release wants 20, the image only goes up to 16
       - npm install --save-dev semantic-release
       - npm install @semantic-release/changelog -d
       - npm install @semantic-release/exec -d