Pin version of infrahub-testcontainers for Python 3.9

Author: dgarros

poetry.lock

@@ -63,7 +63,11 @@ pytest-xdist = "^3.3.1"
 types-python-slugify = "^8.0.0.3"
 invoke = "^2.2.0"
 towncrier = "^24.8.0"
-infrahub-testcontainers = "^1.2.2"
+infrahub-testcontainers = [
+    { version = "^1.2.2", python = ">=3.10" },
+    { version = "1.1.9", python = "3.9" },
+]
+
 astroid = "~3.1"
 
 [tool.poetry.extras]