Relax some version requirements.

--- pyproject.toml.orig	2025-11-22 17:17:57 UTC
+++ pyproject.toml
@@ -47,8 +47,8 @@ dependencies = [
 ]
 dynamic = ["version"]
 dependencies = [
-    "click>=8.1.8",
-    "deepmerge>=2.0",
+    "click>=8.1.7",
+    "deepmerge>=1.1.1",
     "markdown>=3.7",
     "pygments>=2.16",
     "pymdown-extensions>=10.15",