Merge pull request #724 from European-XFEL/dependabot/pip/dot-github/dependabot/xarray-lt-2026.3.0

build(deps): update xarray requirement from <2026.2.0 to <2026.3.0 in /.github/dependabot

Author: takluyver

.github/dependabot/constraints.txt

@@ -13,4 +13,4 @@ python-dateutil==2.9.0.post0
 pytz==2025.2
 pyzmq==27.1.0
 six==1.17.0
-xarray<2026.2.0
+xarray<2026.3.0