Use Ubuntu-20.04 runner for running header guard validation

Using `ubuntu-latest` is triggering warning that it will soon migrate
from 18.04 to 20.04, so I am migrating preventively.
This commit is contained in:
Martin Hořeňovský 2020-11-28 21:36:47 +01:00
parent 4da0c18526
commit 88504e5332
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@ -5,7 +5,7 @@ on: [push, pull_request]
jobs:
build:
# Set the type of machine to run on
runs-on: ubuntu-latest
runs-on: ubuntu-20.04
steps:
- name: Checkout source code