chore: Updated the root whitelist in to include error_mapping.go.

Author: MrEthical07

.github/workflows/go-race.yml

@@ -42,7 +42,7 @@ jobs:
         run: |
           set -euo pipefail
 
-          expected="$(printf '%s\n' builder.go config.go context.go doc.go engine.go errors.go goAuth.go types.go | sort)"
+          expected="$(printf '%s\n' builder.go config.go context.go doc.go engine.go error_mapping.go errors.go goAuth.go types.go | sort)"
           actual="$(ls -1 *.go | grep -v '_test.go$' | sort)"
 
           if [ "$actual" != "$expected" ]; then