Upgrade to Elixir 1.16.2 (#71)

* Upgraded local docker to 1.16.2

* Removed tmpfix from mix check that was waiting for 1.16.2

* Update selfhosted dockerfile with some addl. updates

.check.exs

@@ -9,18 +9,15 @@
   fix: true,
 
   ## don't retry automatically even if last run resulted in failures
-  # retry: false,
+  retry: false,
 
   ## list of tools (see `mix check` docs for a list of default curated tools)
   tools: [
     {:compiler, env: %{"MIX_ENV" => "test"}},
     {:formatter, env: %{"MIX_ENV" => "test"}},
     {:sobelow, "mix sobelow --config"},
-    # TODO: delete these and replace them with builtin ex_unit and formatter tools
-    # once Elixir 1.16.2 is released (see: https://github.com/karolsluszniak/ex_check/issues/41#issuecomment-1921390413)
-    {:elixir_tests, "mix test"},
-    {:elixir_formatting, "mix format --check-formatted", fix: "mix format"},
-    {:prettier_formatting, "yarn run prettier . --check", fix: "yarn run prettier . --write"}
+    {:prettier_formatting, "yarn run prettier . --check", fix: "yarn run prettier . --write"},
+    {:npm_test, false}
 
     ## curated tools may be disabled (e.g. the check for compilation warnings)
     # {:compiler, false},