docs: Use ubuntu-lts-latest

jpmckinney · jpmckinney · commit 14beb56433ef · 2025-06-26T11:59:45.000-04:00
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
@@ -1,6 +1,6 @@
 version: 2
 build:
-  os: ubuntu-20.04
+  os: ubuntu-lts-latest
   tools:
     python: "3.11"
 python:
