Fix definition of trap compression option

unless the -Oextract_dependencies=true flag is supplied

Author: aibaars

rust/codeql-extractor.yml

@@ -23,10 +23,10 @@ options:
         title: Controls compression for the TRAP files written by the extractor.
         description: >
           This option is only intended for use in debugging the extractor. Accepted
-          values are 'brotli' (the default, to write brotli-compressed TRAP), 'gzip', and 'none'
+          values are 'gzip' (the default, to write gzip-compressed TRAP) and 'none'
           (to write uncompressed TRAP).
         type: string
-        pattern: "^(none|gzip|brotli)$"
+        pattern: "^(none|gzip)$"
   extract_dependencies:
     title: Whether to extract dependencies.
     description: >