From 4668e41646ab69862b25ffbd4d215e8f84eeacbb Mon Sep 17 00:00:00 2001
From: Paul Fitzpatrick <paulfitz@alum.mit.edu>
Date: Tue, 15 Oct 2024 11:44:21 -0400
Subject: [PATCH] lock down Ubuntu version for main CI

Main CI tests have just started failing, perhaps as ubuntu-latest
migrates to a new version.
---
 .github/workflows/main.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index c7510bde..3edf7183 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -11,7 +11,7 @@ on:
 
 jobs:
   build_and_test:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       # it is helpful to know which sets of tests would have succeeded,
       # even when there is a failure.
@@ -167,7 +167,7 @@ jobs:
   candidate:
     needs: build_and_test
     if: ${{ success() && github.event_name == 'push' }}
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - name: Fetch new candidate branch
         uses: actions/checkout@v3