Add Julia 1.6 and 1.7 to compile bot

Author: aminya

.github/workflows/SnoopCompile.yml

@@ -3,7 +3,7 @@ name: SnoopCompile
 on:
   push:
     branches:
-    #  - 'master'  # NOTE: uncomment to run the bot only on pushes to master
+      - 'master'
 
 defaults:
   run:
@@ -19,6 +19,8 @@ jobs:
       matrix:
         version:   # NOTE: if not using `yml_path`, these should match the version in `BotConfig`
           - 'nightly'
+          - '1.7.0-beta3'
+          - '1.6.2'
           - '1.5.3'
           - '1.4.2'
           - '1.3.1'