Remove accidental workflow file and finalize Go-Chi v5 fix

- Remove accidentally added automated-tests.yml workflow
- Keep Go 1.24 as intended for CI environment
- Maintain Go-Chi v5 module path fix (github.com/go-chi/chi/v5)
- All tests pass locally with Go 1.21, CI should work with Go 1.24

Author: mbfreder

.github/workflows/automated-tests.yml

@@ -1,6 +1,6 @@
 module go.amzn.com
 
-go 1.21
+go 1.24
 
 require (
 	github.com/aws/aws-lambda-go v1.46.0