fix(deps): update dependency @kubernetes/client-node to v2

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@kubernetes/client-node	1.4.0 → 2.0.0

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Release Notes

kubernetes-client/javascript (@​kubernetes/client-node)

v2.0.0

Compare Source

Breaking Changes

• HTTP backend migrated from node-fetch to undici. undici is now the
  underlying fetch implementation. The node-fetch dependency has been
  removed. Code relying on node-fetch-specific Agent/request internals or
  proxy wiring may need updates; the client now configures an undici
  Dispatcher instead of a node-fetch agent. (#​2306)
• Dropped Node.js 18 support. Node 18 removed from the test matrix (EOL Apr 30, 2025). (#​2815)
• Dropped Node.js 20 support. (#​2840)
• Dropped Node.js 23 support. (#​2840)
• socks-proxy-agent upgraded 8.x → 10.x and socks added as a direct
  dependency for the undici SOCKS proxy path. (#​2820, #​2802)
• undici pinned to ^8.0.0. (#​2821)

Features

• Add SOCKS proxy support on the undici dispatcher path via a SocksClient connector. (#​2802)
• Add support for OIDC custom CA certificates via idp-certificate-authority
  and idp-certificate-authority-data. (#​2761)
• Allow port forwarding to a Deployment or Service (previously Pod-only). (#​2749)
• Introduce Node.js 26 support / testing. (#​2848)
• Generated against Kubernetes API release-1.36 (updated from release-1.34
  via release-1.35 and release-1.36). (#​2732, #​2734, #​2945)

Fixes

• informer: treat TimeoutError as reconnectable, normalize timeout
  errors, and add exponential backoff on reconnect. (#​2813)
• Fix custom fetch implementation to use the Node.js https module instead
  of the dispatcher. (#​2761)
• Fix ArrayBuffer slice to return only the relevant portion of the buffer. (#​2761)
• Fix timeoutSignal being lost after being overridden with controller.signal. (#​2665)
• Fix cp from a Pod being broken. (#​2664)
• Fix Knative Service YAML parsing by checking API groups. (#​2688)
• Don't cast undefined expiration times in exec auth. (#​2666)
• Add a File polyfill for Node.js compatibility with undici (interim, prior to
  dropping older Node versions). (#​2815)

Tooling / Internal

• Migrated the full test suite from nock to the undici MockAgent; nock
  dependency removed. (#​2813, #​2306)
• TypeScript upgraded to 6.x; ESLint upgraded to 10.x; typescript-eslint to 8.6x. (#​2807, #​2765, #​2885)
• Pinned all GitHub Actions to SHAs and added the zizmor security linter;
  resolved template-injection and permission-scoping findings. (#​2814)
• Enabled npm trusted publishing. (#​2726)
• Numerous dependency bumps (undici, ws, openid-client, js-yaml, form-data,
  jsonpath-plus, @​types/node, and dev tooling).
  Notes:
• #​2815 covers both the Node 18 drop and the File polyfill (same branch).
• #​2840 covers both Node 20 and Node 23 drops.
• #​2761 covers three entries (OIDC custom CA + the https fetch fix + the ArrayBuffer slice fix).
• #​2813 covers the informer reconnect fix and the nock→MockAgent migration.
• The socks direct dependency actually arrived via the SocksClient feature (#​2802); the version bump 8→10 was #​2820 — I listed both.
• The last "Numerous dependency bumps" line spans many dependabot PRs, so I left it without a single number. Want me to expand it into individual entries with PR numbers, or leave it as a summary?

New Contributors

• @​loucadufault made their first contribution in #​2675
• @​brendandburns with @​Copilot made their first contribution in #​2761
• @​emmayusufu made their first contribution in #​2881

Full Changelog: kubernetes-client/javascript@1.4.0...2.0.0

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