chore: bump teal.code dependency to 0.7.0 and remove from Remotes (#909)

This PR updates all DESCRIPTION files to require teal.code (>= 0.7.0)
and removes it from Remotes.

Author: m7pr

DESCRIPTION

@@ -58,7 +58,7 @@ Imports:
     sparkline (>= 2.0),
     stats,
     stringr (>= 1.4.1),
-    teal.code (>= 0.6.1),
+    teal.code (>= 0.7.0),
     teal.data (>= 0.7.0),
     teal.logger (>= 0.4.0),
     teal.reporter (>= 0.4.0.9005),