build(deps): update dependency org.apache.maven.plugins:maven-assembly-plugin to v3.7.0

Author: renovate-bot

google-cloud-spanner-executor/pom.xml

@@ -164,7 +164,7 @@
     <plugins>
       <plugin>
         <artifactId>maven-assembly-plugin</artifactId>
-        <version>3.6.0</version>
+        <version>3.7.0</version>
         <configuration>
           <descriptors>
             <descriptor>assembly-descriptor.xml</descriptor>