Update gemfile references to refer to legacy ruby branch

[NickElliot]

Part 1 of ruby removals

Release Note Template for Downstream PRs (will be copied)

[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.

[github-actions]

@NickElliot, this PR is waiting for action from you. If no action is taken, this PR will be closed in 28 days.

Please address any comments or change requests, or re-request review from a core reviewer if no action is required.

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[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, 2 insertions(+), 2 deletions(-))
google-beta provider: Diff ( 1 file changed, 2 insertions(+), 2 deletions(-))
terraform-google-conversion: Diff ( 1 file changed, 2 insertions(+), 2 deletions(-))

[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, 2 insertions(+), 2 deletions(-))
google-beta provider: Diff ( 1 file changed, 2 insertions(+), 2 deletions(-))
terraform-google-conversion: Diff ( 1 file changed, 2 insertions(+), 2 deletions(-))

[modular-magician]

Tests analytics

Total tests: 1039
Passed tests: 966
Skipped tests: 73
Affected tests: 0

Click here to see the affected service packages

• compute

🟢 All tests passed!

View the build log

[NickElliot]

Followed the testing steps mentioned and the testing image is referenced in the execution details.

Believe it would involve undoing the "testing" reference before this is merged, and pushing up the image to the base but will verify first

[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, 3 insertions(+))

[zli82016]

LGTM