try to make doco builds work again by upgrading the build image

diff --git a/.readthedocs.yml b/.readthedocs.yml
index 65357846fed8c9f1822c5cb40a2c1555f8971549..5eeef3b7ea09af1a7399e6d8bb2760cfc3388730 100644 (file)
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -6,7 +6,6 @@ sphinx:
 formats: []
 
 python:
-  version: 3.7
   install:
     - requirements: doc/requirements.txt
     - method: pip
@@ -15,3 +14,6 @@ python:
         - dnssec
         - idna
         - doh
+
+build:
+  os: ubuntu-22.04