increment patch version for new release; improve github action

Author: Teque5

.github/workflows/main.yml

@@ -4,10 +4,12 @@ on:
   push:
   pull_request:
     types: [opened, synchronize]
+  schedule:
+    - cron: "5 5 * * 5" # test every friday @ 0505
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     strategy:
       matrix:
         python-version: ["3.7", "3.9", "3.12"]

sigmf/__init__.py

@@ -5,7 +5,7 @@
 # SPDX-License-Identifier: LGPL-3.0-or-later
 
 # version of this python module
-__version__ = "1.2.2"
+__version__ = "1.2.3"
 # matching version of the SigMF specification
 __specification__ = "1.2.0"