fix(authentication-jwt): move REST API Explorer to devDependencies

Explorer is used only by the example application used by tests.

Signed-off-by: Miroslav Bajtoš <mbajtoss@gmail.com>

Author: bajtos

extensions/authentication-jwt/package.json

@@ -24,7 +24,6 @@
     "@loopback/authentication": "^4.2.10",
     "@loopback/core": "^2.9.2",
     "@loopback/rest": "^5.2.1",
-    "@loopback/rest-explorer": "^2.2.7",
     "@loopback/security": "^0.2.15",
     "@loopback/service-proxy": "^2.3.5",
     "@types/bcryptjs": "2.4.2",
@@ -36,6 +35,7 @@
     "@loopback/build": "^6.1.1",
     "@loopback/eslint-config": "^8.0.4",
     "@loopback/repository": "^2.10.0",
+    "@loopback/rest-explorer": "^2.2.7",
     "@loopback/testlab": "^2.0.2",
     "@types/lodash": "^4.14.158",
     "@types/node": "^10.17.28",