ci: update documentation build to ubuntu 24.04 (#1277)

Author: shiftinv

.github/workflows/lint-test.yml

@@ -36,9 +36,9 @@ jobs:
       uses: pre-commit/[email protected]
 
   docs:
-    # unlike the other workflows, we are using version 20.04 here as
-    # readthedocs uses 20.04 for building our docs, and we want to be explicit
-    runs-on: ubuntu-20.04
+    # unlike the other workflows, we explicitly use the same version as
+    # readthedocs (see .readthedocs.yml) here for consistency
+    runs-on: ubuntu-24.04
     steps:
     - uses: actions/checkout@v4
 

.readthedocs.yml

@@ -4,7 +4,7 @@ version: 2
 formats:
   - htmlzip
 build:
-  os: ubuntu-20.04
+  os: ubuntu-24.04
   tools:
     python: "3.8"
 sphinx: