Fix readthedocs builds

jstriebel · web-flow · commit a18756cc3c3b · 2023-05-07T00:27:41.000+02:00
The [latest readthedocs builds were failing](https://readthedocs.org/projects/zarr-specs/builds/20442359/), as a newer OpenSSL version is required, which is not used in the old default image. This should fix the builds, see readthedocs/readthedocs.org#10290
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
@@ -0,0 +1,4 @@
+version: 2
+
+build:
+  os: ubuntu-22.04

-Original file line number
+Diff line change
@@ @@ -0,0 +1,4 @@ @@
 +version: 2
++
 +build:
 +  os: ubuntu-22.04