CI: Stop testing on Python 3.7 through 3.9

Author: amotl

.github/workflows/main.yml

@@ -26,7 +26,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ['ubuntu-22.04']
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14']
         cratedb-version: ['4.8.4', '5.10.16', '6.3.3']
         include: