[deps] bump linodego to v2

[AshleyDumaine]

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2. Have you added tests?
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linodego v1 is not receiving backports for features going into the new v2 (which has been out for a month).
See https://github.com/linode/linodego/blob/main/docs/linode_v2_migration_guide.md

[codecov]

Codecov Report

❌ Patch coverage is 91.48936% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 73.68%. Comparing base (8ea345d) to head (a6e4dcb).

Files with missing lines	Patch %	Lines
cloud/linode/client/client.go	60.00%	1 Missing and 1 partial ⚠️
cloud/linode/loadbalancers.go	93.33%	1 Missing ⚠️
cloud/linode/services/firewalls.go	95.45%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #585      +/-   ##
==========================================
+ Coverage   73.65%   73.68%   +0.02%     
==========================================
  Files          19       19              
  Lines        3029     3036       +7     
==========================================
+ Hits         2231     2237       +6     
  Misses        538      538              
- Partials      260      261       +1     

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[Copilot]

Pull request overview

This PR upgrades the Linode API client dependency from github.com/linode/linodego v1 to github.com/linode/linodego/v2, updating the cloud controller manager’s Linode integrations (NodeBalancer, firewall, VPC routes, instance metadata, and Cilium shared-IP support) to match linodego v2’s API and type changes.

Changes:

• Switch all linodego imports to github.com/linode/linodego/v2 and bump the module requirement.
• Update code and tests for linodego v2 API/type changes (e.g., instance IPv4 representation, firewall rule types, NodeBalancer VPC options, NewClient returning an error, AddInstanceIPAddress options).
• Refresh go.mod/go.sum to reflect transitive dependency changes from the upgrade.

Reviewed changes

Copilot reviewed 25 out of 28 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
main.go	Updates linodego import path to v2.
go.mod	Bumps linodego dependency to v2 and adjusts indirect deps/replace directives.
go.sum	Updates checksums to match the dependency graph after the bump.
cloud/nodeipam/ipam/cloud_allocator.go	Updates linodego import path to v2.
cloud/nodeipam/ipam/cloud_allocator_test.go	Updates linodego import path to v2 in tests.
cloud/linode/utils/common.go	Updates linodego import path and adapts IsPrivate signature/behavior for v2-related type usage.
cloud/linode/utils/common_test.go	Updates linodego import path to v2 in tests.
cloud/linode/services/vpc.go	Updates linodego import path to v2.
cloud/linode/services/vpc_test.go	Updates linodego import path to v2 in tests.
cloud/linode/services/instances.go	Updates linodego import path to v2 (and aligns with v2 instance IP handling).
cloud/linode/services/instances_test.go	Updates tests for v2 instance IPv4 representation changes.
cloud/linode/services/firewalls.go	Updates firewall rule types/options to linodego v2 shapes.
cloud/linode/services/firewalls_test.go	Updates firewall-related tests to v2 rule types/options.
cloud/linode/service_controller.go	Updates linodego import path to v2.
cloud/linode/route_controller.go	Updates v2 interface update option shapes (ranges/IPRanges).
cloud/linode/route_controller_test.go	Updates tests/import ordering for v2 and instance IPv4 changes.
cloud/linode/node_controller.go	Updates linodego import path to v2 (and aligns with v2 instance IP handling).
cloud/linode/node_controller_test.go	Updates tests for v2 instance IPv4 representation changes.
cloud/linode/loadbalancers.go	Updates NodeBalancer create/update options and VPC config fields for v2.
cloud/linode/loadbalancers_test.go	Updates tests for v2 client creation, firewall rules, and NodeBalancer VPC fields/types.
cloud/linode/loadbalancers_helpers.go	Updates linodego import path to v2.
cloud/linode/health_check_test.go	Updates linodego import path to v2 in tests.
cloud/linode/fake_linode_test.go	Updates fake API types/handlers to match v2 firewall/nodebalancer update payloads.
cloud/linode/client/mocks/mock_client.go	Updates generated mock signatures for v2 API changes.
cloud/linode/client/client.go	Updates client construction for v2 (NewClient error) and API signature changes.
cloud/linode/client/client_with_metrics.go	Updates metrics decorator signatures/return types for v2 APIs.
cloud/linode/cilium_loadbalancers.go	Updates AddInstanceIPAddress call to v2 options struct.
cloud/linode/cilium_loadbalancers_test.go	Updates Cilium shared-IP tests for v2 types and AddInstanceIPAddress options.

Files not reviewed (2)

• cloud/linode/client/client_with_metrics.go: Generated file
• cloud/linode/client/mocks/mock_client.go: Generated file