Increase timeout time to 20 minutes for cloudfunctions function

[hao-nan-li]

fixes hashicorp/terraform-provider-google#18094

Release Note Template for Downstream PRs (will be copied)

cloudfunctions: increased the timeouts to 20 minutes for `google_cloudfunctions_function` resource

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR hasn't generated any diffs, but I'll let you know if a future commit does.

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR generated some diffs in downstreams - here they are.

google provider: Diff ( 1 file changed, 4 insertions(+), 4 deletions(-))
google-beta provider: Diff ( 1 file changed, 4 insertions(+), 4 deletions(-))

[modular-magician]

Tests analytics

Total tests: 18
Passed tests: 16
Skipped tests: 2
Affected tests: 0

Click here to see the affected service packages

• cloudfunctions

🟢 All tests passed!

View the build log

[zli82016]

LGTM