ci: add name elements for the POM.xml files (#2612)

This should resolve the dry-run error:

```
{
  "pkg:maven/com.google.cloud/google-cloud-bigtable-emulator-core@0.198.0": [
    "Project name is missing"
  ],
  "pkg:maven/com.google.cloud/google-cloud-bigtable-deps-bom@2.61.0": [
    "Project name is missing"
  ]
}
```

b/427182301

Author: suztomo

google-cloud-bigtable-deps-bom/pom.xml

@@ -16,6 +16,7 @@
   <version>2.60.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-bigtable:current} -->
 
   <packaging>pom</packaging>
+  <name>Google Cloud Bigtable Dependency BOM</name>
   <description>
     A BOM that describes all of the dependencies used by google-cloud-bigtable. It's
     mainly intended to be used by java-bigtable-hbase to align dependencies

google-cloud-bigtable-emulator-core/pom.xml

@@ -9,6 +9,7 @@
     <groupId>com.google.cloud</groupId>
     <version>2.60.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-bigtable:current} -->
   </parent>
+  <name>Google Cloud Java - Bigtable Emulator Core</name>
 
   <artifactId>google-cloud-bigtable-emulator-core</artifactId>
   <version>0.197.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-bigtable-emulator:current} -->