Update maturin requirement from ~=0.14.0 to ~=0.15.1 in /python

Updates the requirements on [maturin](https://github.com/pyo3/maturin) to permit the latest version.
- [Release notes](https://github.com/pyo3/maturin/releases)
- [Changelog](https://github.com/PyO3/maturin/blob/main/Changelog.md)
- [Commits](https://github.com/pyo3/maturin/compare/v0.14.0...v0.15.1)

---
updated-dependencies:
- dependency-name: maturin
  dependency-type: direct:development
...

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

.github/workflows/tests.yml

@@ -281,7 +281,7 @@ jobs:
           python-version: "3.10"
           cache: pip
           cache-dependency-path: '**/requirements.dev.txt'
-      - run: pip install "maturin~=0.14.0"
+      - run: pip install "maturin~=0.15.0"
       - run: maturin build -m python/Cargo.toml
       - run: pip install --no-index --find-links=target/wheels/ pyoxigraph
       - run: rm -r target/wheels

python/pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["maturin~=0.14.0"]
+requires = ["maturin~=0.15.0"]
 build-backend = "maturin"
 
 [project]

python/requirements.dev.txt

@@ -1,6 +1,6 @@
 black~=23.1
 furo
-maturin~=0.14.0
+maturin~=0.15.1
 mypy~=1.0
 ruff~=0.0.255
 sphinx~=5.3