Cloud functions need to be updated

[sofisl]

googleapis/google-cloud-node#3621

[ace-n]

@rswlkr would you mind telling us which samples this was for?

Note to self:

I looked for Cloud Functions samples with upper-case names (using the grep commands below in the functions directory), but I couldn't find anything:

grep -E "functions\.(http|cloudEvent)\(.[A-Z]" **/*.js
grep -E "exports\.[A-Z]" **/*.js

[pattishin]

Closing out as this is referencing older version. As previously noted, directions for valid characters listed https://github.com/googleapis/nodejs-functions/blob/main/src/v2/function_service_client.ts#L869.