gnucash master: Update Github checkout action

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/0be0b7e5 (commit)
	from  https://github.com/Gnucash/gnucash/commit/1eecb9f5 (commit)



commit 0be0b7e5a8b8dcac323e7cf85954faa958e41617
Author: John Ralls <jralls at ceridwen.us>
Date:   Thu Mar 2 17:34:39 2023 -0800

    Update Github checkout action
    
    Resolves node.js V12 deprecation warning.



Summary of changes:
 .github/workflows/ci-docker.yml  | 2 +-
 .github/workflows/ci-tests.yml   | 2 +-
 .github/workflows/mac-tests.yaml | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)