Update Docker CI tags to 20260203-9b5901e (#2475)

This PR updates the Docker CI image tags to the latest version:
`20260203-9b5901e`

Updated images:
- flashinfer/flashinfer-ci-cu126:20260203-9b5901e
- flashinfer/flashinfer-ci-cu128:20260203-9b5901e
- flashinfer/flashinfer-ci-cu129:20260203-9b5901e
- flashinfer/flashinfer-ci-cu130:20260203-9b5901e

Auto-generated by [release-ci-docker
workflow](https://github.com/flashinfer-ai/flashinfer/actions/runs/21621475058)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Chores**
* Updated Docker image references in the CI/CD pipeline configuration to
the latest versions for improved build consistency across multiple
environments.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Co-authored-by: yzh119 <11773619+yzh119@users.noreply.github.com>

Author: flashinfer-bot

ci/docker-tags.yml

@@ -1,4 +1,4 @@
-flashinfer/flashinfer-ci-cu126: 20260131-a52eff1
-flashinfer/flashinfer-ci-cu128: 20260131-a52eff1
-flashinfer/flashinfer-ci-cu129: 20260131-a52eff1
-flashinfer/flashinfer-ci-cu130: 20260131-a52eff1
+flashinfer/flashinfer-ci-cu126: 20260203-9b5901e
+flashinfer/flashinfer-ci-cu128: 20260203-9b5901e
+flashinfer/flashinfer-ci-cu129: 20260203-9b5901e
+flashinfer/flashinfer-ci-cu130: 20260203-9b5901e