add renovate.json5 config

[Bobi-Wan]

What this PR does / why we need it:
Testing whether adding a basic renovate configuration (no package rules or custom managers) and removing the dependabot configuration is enough for enabling it in this repository.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

Release note:

Introduce renovate.json5 configuration file and remove dependabot configuration file.

[hyperspace-insights]

Summary

The following content is AI-generated and provides a summary of the pull request:

---

How to categorize this PR?
/kind enhancement
/area oidc-apps

What this PR does / why we need it:
This PR introduces a Renovate configuration file (renovate.json5) to enable automated dependency updates for the repository. The configuration extends the recommended Renovate settings, applies the kind/enhancement label to dependency update PRs, and runs go mod tidy after Go module updates to keep the module files consistent.

Code changes:

• Added renovate.json5 with the recommended Renovate base configuration, a kind/enhancement label, and the gomodTidy post-update option.

Additional context:
This is a minimal configuration to bootstrap Renovate on the repository. The gomodTidy post-update option ensures Go module files remain tidy after dependency bumps, reducing noise from stale indirect dependencies.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

Release note:

Introduce renovate.json5 configuration file to enable automated dependency updates via Renovate bot.

---

• 🔄 Regenerate and Update Summary
• ✏️ Insert as PR Description (deletes this comment)
• 🗑️ Delete comment

PR Bot Information

Version: 1.26.11

• File Content Strategy: Full file content
• Correlation ID: 6e9cbab3-bba4-4f7c-b4d4-f0cf038f8725
• LLM: anthropic--claude-4.6-sonnet
• Summary Prompt: PR Prompt File
• Event Trigger: pull_request.opened
• Output Template: PR Template File

[gardener-prow]

@hyperspace-insights[bot]: The label(s) area/oidc-apps cannot be applied, because the repository doesn't have them.

Details

In response to this:

Summary

The following content is AI-generated and provides a summary of the pull request:

---

How to categorize this PR?
/kind enhancement
/area oidc-apps

What this PR does / why we need it:
This PR introduces a Renovate configuration file (renovate.json5) to enable automated dependency updates for the repository. The configuration extends the recommended Renovate settings, applies the kind/enhancement label to dependency update PRs, and runs go mod tidy after Go module updates to keep the module files consistent.

Code changes:

• Added renovate.json5 with the recommended Renovate base configuration, a kind/enhancement label, and the gomodTidy post-update option.

Additional context:
This is a minimal configuration to bootstrap Renovate on the repository. The gomodTidy post-update option ensures Go module files remain tidy after dependency bumps, reducing noise from stale indirect dependencies.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

Release note:

Introduce renovate.json5 configuration file to enable automated dependency updates via Renovate bot.

---

• 🔄 Regenerate and Update Summary
• ✏️ Insert as PR Description (deletes this comment)
• 🗑️ Delete comment

PR Bot Information

Version: 1.26.11

• File Content Strategy: Full file content
• Correlation ID: 6e9cbab3-bba4-4f7c-b4d4-f0cf038f8725
• LLM: anthropic--claude-4.6-sonnet
• Summary Prompt: PR Prompt File
• Event Trigger: pull_request.opened
• Output Template: PR Template File

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[nickytd]

/lgtm

[gardener-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nickytd

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Details

Needs approval from an approver in each of these files:

• OWNERS [nickytd]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[gardener-prow]

LGTM label has been added.

Details

Git tree hash: 8ee848baddd256ef00d30838f26c4eced6618934