feat: cache venv_lookup results per directory with LRU cache

- feat: drop support for python 3.8 and 3.9

Author: FabienArcellier

.github/workflows/ci-windows.yml

@@ -8,7 +8,7 @@ jobs:
 
         strategy:
           matrix:
-            python-version: ["3.8", "3.10"]
+            python-version: ["3.10"]
 
         steps:
             - uses: actions/checkout@v2

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
 
         strategy:
           matrix:
-            python-version: ["3.8", "3.9", "3.10", "3.11"]
+            python-version: ["3.10", "3.11"]
 
         steps:
             - uses: actions/checkout@v2