revert testHi so that the CI tests work -- ubutntu-latest still has earlier python version. update CI to use latest 18, 19 versions

Author: Randall C. O'Reilly

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
     name: Build
     strategy:
       matrix:
-        go-version: [1.16.x, 1.15.x]
+        go-version: [1.19.x, 1.18.x]
         platform: [ubuntu-latest]
         #platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.platform }}

main_test.go

@@ -216,7 +216,7 @@ caught: can't work for 24 hours!
 --- p.Salary(24): caught: can't work for 24 hours!
 --- Person.__init__
 caught: argument 2 must be str, not int | err-type: <class 'TypeError'>
-caught: 'str' object cannot be interpreted as an integer | err-type: <class 'TypeError'>
+caught: an integer is required (got type str) | err-type: <class 'TypeError'>
 *ERROR* no exception raised!
 hi.Person{Name="name", Age=0}
 hi.Person{Name="name", Age=42}