fix: google-auth-library-oauth2-http as runtime scope (#835)

Fixing 5e6df9e#diff-ffb9a9b739efe6b09867da3f99a340c03424ea746c895074cb51fbe55ba39f6eL91

Author: suztomo

README.md

@@ -57,13 +57,13 @@ implementation 'com.google.cloud:google-cloud-kms'
 If you are using Gradle without BOM, add this to your dependencies:
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-kms:2.6.0'
+implementation 'com.google.cloud:google-cloud-kms:2.6.2'
 ```
 
 If you are using SBT, add this to your dependencies:
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-kms" % "2.6.0"
+libraryDependencies += "com.google.cloud" % "google-cloud-kms" % "2.6.2"
 ```
 
 ## Authentication

google-cloud-kms/pom.xml

@@ -78,18 +78,18 @@
       <groupId>com.google.api.grpc</groupId>
       <artifactId>proto-google-iam-v1</artifactId>
     </dependency>
+    <dependency>
+      <groupId>com.google.auth</groupId>
+      <artifactId>google-auth-library-oauth2-http</artifactId>
+      <scope>runtime</scope>
+    </dependency>
 
     <!-- Test dependencies -->
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
       <scope>test</scope>
     </dependency>
-    <dependency>
-      <groupId>com.google.auth</groupId>
-      <artifactId>google-auth-library-oauth2-http</artifactId>
-      <scope>test</scope>
-    </dependency>
     <dependency>
       <groupId>com.google.api.grpc</groupId>
       <artifactId>grpc-google-iam-v1</artifactId>