Updated Snap instructions & Makefile.snap.

snapcraft.yaml

@@ -1,11 +1,11 @@
 name: ssh-audit
-version: '2.2.0-1'
+version: '2.3.1-1'
 license: 'MIT'
 summary: ssh-audit
 description: |
   SSH server and client security configuration auditor.  Official repository: <https://github.com/jtesta/ssh-audit>
 
-base: core18
+base: core20
 grade: stable
 confinement: strict
 
@@ -17,5 +17,5 @@ apps:
 parts:
   ssh-audit:
     plugin: python
-    python-version: python3
+    # python-version: python3
     source: .