[#720] Add scala/sbt to the list of built-in languages/toolchains in readme

Author: mengdaming

.github/dependabot.yml

@@ -1,7 +1,7 @@
 # To get started with Dependabot version updates, you'll need to specify which
 # package ecosystems to update and where the package manifests are located.
 # Please see the documentation for all configuration options:
-# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+# https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#package-ecosystem
 
 version: 2
 updates:

README.md

@@ -86,6 +86,7 @@ provided as built-in.
 | php        | phpunit           | phpunit                                               |
 | python     | pytest            | pytest bazel make                                     |
 | rust       | cargo             | cargo nextest                                         |
+| scala      | sbt               | sbt                                                   |
 | typescript | yarn              | yarn bazel make                                       |
 
 ### Base directory