From 074814be8779504dfe22539e80d5686627c4f952 Mon Sep 17 00:00:00 2001
From: Jonathan Hui <jonhui@google.com>
Date: Mon, 31 Jan 2022 20:30:52 -0800
Subject: [PATCH] [github-actions] fix branch filter in OTNS workflow (#7382)

Also pin ubuntu image to 20.04.
---
 .github/workflows/otns.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/otns.yml b/.github/workflows/otns.yml
index 20dc2d941..2d3795628 100644
--- a/.github/workflows/otns.yml
+++ b/.github/workflows/otns.yml
@@ -41,12 +41,12 @@ env:
 jobs:
 
   cancel-previous-runs:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
     - uses: rokroskar/workflow-run-cleanup-action@master
       env:
         GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
-      if: "github.ref != 'refs/heads/master'"
+      if: "github.ref != 'refs/heads/main'"
 
   unittests:
     name: Unittests