Update the pubspec

pubspec.yaml

@@ -15,7 +15,7 @@ dependencies:
   args: ^2.0.0
   async: ^2.5.0
   charcode: ^1.2.0
-  cli_repl: ^0.2.1-nullsafety
+  cli_repl: ^0.2.1
   collection: ^1.15.0
   meta: ^1.3.0
   node_interop: ^2.0.0
@@ -27,18 +27,16 @@ dependencies:
   stream_transform: ^2.0.0
   string_scanner: ^1.1.0
   term_glyph: ^1.2.0
-  tuple: ^2.0.0-nullsafety.0
+  tuple: ^2.0.0
   watcher: ^1.0.0
 
-publish_to: none
-
 dev_dependencies:
   archive: ^3.1.2
   analyzer: ^1.1.0
   cli_pkg: ^1.3.0
   crypto: ^3.0.0
   dart_style: ^2.0.0
-  grinder: ^0.9.0-nullsafety.0
+  grinder: ^0.9.0
   node_preamble: ^2.0.0
   pedantic: ^1.11.0
   pub_semver: ^2.0.0