ci uses ubuntu-24.04 (#346)

* ci uses ubuntu-24.04

* python-version 3.9

* python-version 3.12

* Revert "python-version 3.12"

This reverts commit 5fae702.

Author: keiravillekode

.github/workflows/ci-vint.yml

@@ -8,13 +8,13 @@ on:
 
 jobs:
   ci:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
 
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
       - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065
         with:
-          python-version: 3.7
+          python-version: 3.9
 
       - name: Install project dependencies
         run: pip install vim-vint