chore: update gitignore list (#9437)

Updated the gitignore list with the command : `go run scripts/generate-gitignores.go`

options/gitignore/Racket

@@ -0,0 +1,15 @@
+# gitignore template for the Racket language
+# website: http://www.racket-lang.org/
+
+# DrRacket autosave files
+*.rkt~
+*.rkt.bak
+\#*.rkt#
+\#*.rkt#*#
+
+# Compiled racket bytecode
+compiled/
+*.zo
+
+# Dependency tracking files
+*.dep