fix(ci): use ubuntu-latest (#106)

Author: MattKetmo

.github/workflows/test.yaml

@@ -17,12 +17,12 @@ on:
       - '.github/workflows/test.yaml'
 
 env:
-  GO_VERSION: "1.22"
+  GO_VERSION: "1.23"
 
 jobs:
   unit-tests:
     name: 'Unit tests'
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4