Update numpy requirement from <=2.2.4 to <=2.2.6 (#492)

Updates the requirements on [numpy](https://github.com/numpy/numpy) to permit the latest version.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/RELEASE_WALKTHROUGH.rst)
- [Commits](numpy/numpy@v0.2.0...v2.2.6)

---
updated-dependencies:
- dependency-name: numpy
  dependency-version: 2.2.6
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Tien Tong <35613222+tien-tong@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -22,7 +22,7 @@ license = {file = "LICENSE"}
 requires-python = ">=3.10"
 dependencies = [
     "datalad>=0.13.5,!=0.17.3,!=0.17.0,!=0.16.1",
-    "numpy<=2.2.4",
+    "numpy<=2.2.6",
     "pandas<=2.3.3",
     "pyarrow>=14.0",
     "pybids<=0.21.0",