[Ruby] Rubocop offenses "Use normalcase for symbol numbers" for GOOGLEMAPS api

[WolfgangHG]

Found as part of #7774:

Using the source code from 2026-06-17 and this command:

.\it\generate-code.ps1 -descriptionUrl https://raw.githubusercontent.com/googlemaps/openapi-specification/refs/tags/v1.22.5/dist/google-maps-platform-openapi3.yml -language php -dev
.\it\exec-cmd.ps1 -descriptionUrl https://raw.githubusercontent.com/googlemaps/openapi-specification/refs/tags/v1.22.5/dist/google-maps-platform-openapi3.yml -language Ruby

The generated client reports some Rubocop offenses (all about the same casing problem):

Offenses:

lib/integration_test/client/maps/api/geocode/json_escaped/get_result_type_query_parameter_type.rb:8:29: C: Naming/VariableNumber: Use normalcase for symbol numbers.
                            Administrative_area_level_1: :Administrative_area_level_1,
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
lib/integration_test/client/maps/api/geocode/json_escaped/get_result_type_query_parameter_type.rb:8:58: C: Naming/VariableNumber: Use normalcase for symbol numbers.
                            Administrative_area_level_1: :Administrative_area_level_1,
                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
lib/integration_test/client/maps/api/geocode/json_escaped/get_result_type_query_parameter_type.rb:9:29: C: Naming/VariableNumber: Use normalcase for symbol numbers.
                            Administrative_area_level_2: :Administrative_area_level_2,
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
lib/integration_test/client/maps/api/geocode/json_escaped/get_result_type_query_parameter_type.rb:9:58: C: Naming/VariableNumber: Use normalcase for symbol numbers.
                            Administrative_area_level_2: :Administrative_area_level_2,
                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

The file has this content:

module Integration_test
    module Client
        module Maps
            module Api
                module Geocode
                    module JsonEscaped
                        GetResultTypeQueryParameterType = {
                            Administrative_area_level_1: :Administrative_area_level_1,
                            Administrative_area_level_2: :Administrative_area_level_2,
                            Administrative_area_level_3: :Administrative_area_level_3,
                            Administrative_area_level_4: :Administrative_area_level_4,
                            Administrative_area_level_5: :Administrative_area_level_5,
                            Airport: :Airport,
                            Colloquial_area: :Colloquial_area,
                            Country: :Country,
                            Intersection: :Intersection,
                            Locality: :Locality,
                            ...
                        }
                    end
                end
            end
        end
    end
end