chore: release 1.18.1 (#299)

🤖 I have created a release \*beep\* \*boop\* --- ### [1.18.1](https://www.github.com/googleapis/java-spanner-jdbc/compare/v1.18.0...v1.18.1) (2020-12-14) ### Dependencies * update dependency com.google.cloud:google-cloud-shared-dependencies to v0.16.1 ([5d5e5fc](https://www.github.com/googleapis/java-spanner-jdbc/commit/5d5e5fccef229e4edd9d34a93553a85a1e97b14f)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please).

Author: release-please[bot]

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+### [1.18.1](https://www.github.com/googleapis/java-spanner-jdbc/compare/v1.18.0...v1.18.1) (2020-12-14)
+
+
+### Dependencies
+
+* update dependency com.google.cloud:google-cloud-shared-dependencies to v0.16.1 ([5d5e5fc](https://www.github.com/googleapis/java-spanner-jdbc/commit/5d5e5fccef229e4edd9d34a93553a85a1e97b14f))
+
 ## [1.18.0](https://www.github.com/googleapis/java-spanner-jdbc/compare/v1.17.3...v1.18.0) (2020-12-10)
 
 

pom.xml

@@ -4,7 +4,7 @@
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <artifactId>google-cloud-spanner-jdbc</artifactId>
- <version>1.18.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner-jdbc:current} -->
+ <version>1.18.1</version><!-- {x-version-update:google-cloud-spanner-jdbc:current} -->
  <packaging>jar</packaging>
  <name>Google Cloud Spanner JDBC</name>
  <url>https://github.com/googleapis/java-spanner-jdbc</url>

samples/snapshot/pom.xml

@@ -28,7 +28,7 @@
  <dependency>
  <groupId>com.google.cloud</groupId>
  <artifactId>google-cloud-spanner-jdbc</artifactId>
- <version>1.18.1-SNAPSHOT</version>
+ <version>1.18.1</version>
  </dependency>
  <!-- {x-version-update-end} -->
 

versions.txt

@@ -1,4 +1,4 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-spanner-jdbc:1.18.0:1.18.1-SNAPSHOT
+google-cloud-spanner-jdbc:1.18.1:1.18.1