deps: update dependency kr.motd.maven:os-maven-plugin to v1.7.1 (#1792)

* deps: update dependency kr.motd.maven:os-maven-plugin to v1.7.1

* 🦉 Updates from OwlBot post-processor

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google-cloud-bigtable/pom.xml

@@ -601,7 +601,7 @@
       <extension>
         <groupId>kr.motd.maven</groupId>
         <artifactId>os-maven-plugin</artifactId>
-        <version>1.6.0</version>
+        <version>1.7.1</version>
       </extension>
     </extensions>
     <plugins>