Bump minimum Python version to 3.14

I don't think we need to worry about backwards compatibility. Apart from anything, we're using `uv`, which should make it dead simple to install Python 3.14.

Author: alexdewar

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
           - ubuntu-latest
           - windows-latest
           - macos-latest
-        python-version: ['3.13']
+        python-version: ['3.14']
 
     steps:
       - uses: actions/checkout@v6

pyproject.toml

@@ -6,7 +6,7 @@ authors = [
     {name = "Alex Dewar", email = "a.dewar@imperial.ac.uk"},
     {name = "Imperial College London RSE Team", email = "ict-rse-team@imperial.ac.uk"},
 ]
-requires-python = ">=3.13"
+requires-python = ">=3.14"
 
 dependencies = []
 
@@ -37,7 +37,7 @@ disallow_untyped_defs = false
 addopts = "-v -p no:warnings --cov=muse2_data_analysis --cov-branch --cov-report=html --cov-report=xml --doctest-modules --ignore=muse2_data_analysis/__main__.py --ignore=docs/"
 
 [tool.ruff]
-target-version = "py313"
+target-version = "py314"
 
 [tool.ruff.lint]
 select = [