Update WORKSPACE snippet to refer to 2.1.4 release

Author: plaird

README.md

@@ -32,9 +32,9 @@ This is the recommended approach for most users.
 ```starlark
 http_archive(
     name = "rules_spring",
-    sha256 = "4afceddd222bfd596f09591fd41f0800e57dd2d49e3fa0bda67f1b43149e8f3e",
+    sha256 = "9385652bb92d365675d1ca7c963672a8091dc5940a9e307104d3c92e7a789c8e",
     urls = [
-        "https://github.com/salesforce/rules_spring/releases/download/2.1.3/rules-spring-2.1.3.zip",
+         "https://github.com/salesforce/rules_spring/releases/download/2.1.4/rules-spring-2.1.4.zip",
     ],
 )
 ```