Switch to py38, latest go builder

Issue-ID: RIC-228
Change-Id: I33910f9573e50b43eb1941c3178d2402ea88f0b9
Signed-off-by: Tommy Carpenter <tc677g@att.com>
diff --git a/tox.ini b/tox.ini
index d7290d3..bfcc647 100644
--- a/tox.ini
+++ b/tox.ini
@@ -19,7 +19,7 @@
 minversion = 2.0
 
 [testenv:code]
-basepython = python3.7
+basepython = python3.8
 deps=
     pytest
     coverage
@@ -34,7 +34,7 @@
     coverage xml -i
 
 [testenv:flake8]
-basepython = python3.7
+basepython = python3.8
 skip_install = true
 deps = flake8
 commands = flake8 setup.py ricxappframe tests
@@ -46,7 +46,7 @@
 [testenv:docs]
 whitelist_externals = echo
 skipsdist = true
-basepython = python3.7
+basepython = python3.8
 deps =
     sphinx
     sphinx-rtd-theme
@@ -59,7 +59,7 @@
 
 [testenv:docs-linkcheck]
 skipsdist = true
-basepython = python3.7
+basepython = python3.8
 deps = sphinx
        sphinx-rtd-theme
        sphinxcontrib-httpdomain