docs(rtd): update readthedocs config to use uv (jxmorris12#175)

Author: mdevolde

.readthedocs.yaml

@@ -4,13 +4,17 @@
 version: 2
 
 build:
-  os: ubuntu-24.04
+  os: ubuntu-26.04
   tools:
-    python: "3.13"
+    python: "3.14"
 
 sphinx:
+  builder: html
   configuration: docs/source/conf.py
 
 python:
   install:
-    - requirements: docs/requirements.txt
+    - method: uv
+      command: sync
+      groups:
+        - docs