SPEC 0: Bump minimum supported version to Python 3.12, xarray 2024.7.0

Following [SPEC 0](https://scientific-python.org/specs/spec-0000/) policy where Python 3.11 should be dropped in 2025 quarter 4, and xarray 2024.6.0 should be dropped in 2026 quarter 2.

Author: weiji14

.github/workflows/pypi-release.yaml

@@ -32,7 +32,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
         with:
-          python-version: "3.10"
+          python-version: "3.12"
 
       - name: Install dependencies
         run: |

.pre-commit-config.yaml

@@ -25,7 +25,7 @@ repos:
     hooks:
       - id: pyupgrade
         args:
-          - "--py310-plus"
+          - "--py312-plus"
 
   - repo: https://github.com/keewis/blackdoc
     rev: v0.4.6

pyproject.toml

@@ -9,15 +9,15 @@ authors = [{name = "cupy-xarray developers"}]
 license = "Apache-2.0"
 license-files = ["LICENSE"]
 readme = "README.md"
-requires-python = ">=3.10"
+requires-python = ">=3.12"
 classifiers = [
     "Programming Language :: Python :: 3",
     "Operating System :: OS Independent",
 ]
-dynamic = ["version"]
 dependencies = [
-    "xarray>=2024.02.0",
+    "xarray>=2024.7.0",
 ]
+dynamic = ["version"]
 
 [project.optional-dependencies]