fix: fix build error (#247)

- The lockfile would have been modified by this install, which is
  explicitly forbidden.

Author: fukudasjp

yarn.lock

@@ -2267,7 +2267,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@ibm-watson/discovery-react-components@^1.5.0-beta.2, @ibm-watson/discovery-react-components@workspace:packages/discovery-react-components":
+"@ibm-watson/discovery-react-components@^1.5.0-beta.3, @ibm-watson/discovery-react-components@workspace:packages/discovery-react-components":
   version: 0.0.0-use.local
   resolution: "@ibm-watson/discovery-react-components@workspace:packages/discovery-react-components"
   dependencies:
@@ -10260,7 +10260,7 @@ __metadata:
   resolution: "discovery-search-app@workspace:examples/discovery-search-app"
   dependencies:
     "@carbon/icons": ^10.5.0
-    "@ibm-watson/discovery-react-components": ^1.5.0-beta.2
+    "@ibm-watson/discovery-react-components": ^1.5.0-beta.3
     "@ibm-watson/discovery-styles": ^1.5.0-beta.2
     body-parser: ^1.19.0
     carbon-components: ^10.6.0