Bump google-cloud-spanner-jdbc from 2.9.13 to 2.9.16 (#313)

Bumps [google-cloud-spanner-jdbc](https://github.com/googleapis/java-spanner-jdbc) from 2.9.13 to 2.9.16.
- [Release notes](https://github.com/googleapis/java-spanner-jdbc/releases)
- [Changelog](https://github.com/googleapis/java-spanner-jdbc/blob/main/CHANGELOG.md)
- [Commits](googleapis/java-spanner-jdbc@v2.9.13...v2.9.16)

---
updated-dependencies:
- dependency-name: com.google.cloud:google-cloud-spanner-jdbc
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pom.xml

@@ -110,7 +110,7 @@
                 <dependency>
                     <groupId>com.google.cloud</groupId>
                     <artifactId>google-cloud-spanner-jdbc</artifactId>
-                    <version>2.9.13</version>
+                    <version>2.9.16</version>
                 </dependency>
             </dependencies>
         </profile>