Drop support for old Cython.

Author: Nikratio

.github/workflows/test.yml

@@ -12,13 +12,7 @@ jobs:
       fail-fast: true
       matrix:
         python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
-        cython-version: ["0.29", "3"]
         os: [ubuntu-24.04]
-        exclude:
-          - python-version: "3.13"
-            cython-version: "0.29"
-          - python-version: "3.14"
-            cython-version: "0.29"
 
     steps:
       - uses: actions/checkout@v4
@@ -32,16 +26,7 @@ jobs:
       - name: Install Linux dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install -y libattr1-dev libfuse3-dev fuse3
-          sudo apt-get install -y pkg-config gcc
-
-      - name: Install old Cython
-        if: ${{ matrix.cython-version == '0.29' }}
-        run: pip install "Cython<3"
-
-      - name: Install modern Cython
-        if: ${{ matrix.cython-version == '3' }}
-        run: pip install "Cython>=3"
+          sudo apt-get install -y libattr1-dev libfuse3-dev fuse3 pkg-config gcc
 
       - name: Build
         run: uv sync --locked