Bump tensorflow from 2.18.0 to 2.18.1

Bumps [tensorflow](https://github.com/tensorflow/tensorflow) from 2.18.0 to 2.18.1.
- [Release notes](https://github.com/tensorflow/tensorflow/releases)
- [Changelog](https://github.com/tensorflow/tensorflow/blob/v2.18.1/RELEASE.md)
- [Commits](tensorflow/tensorflow@v2.18.0...v2.18.1)

---
updated-dependencies:
- dependency-name: tensorflow
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -1,3 +1,3 @@
-tensorflow==2.18.0
+tensorflow==2.18.1
 Flask==3.1.0
 numpy==2.2.3