chore(master): release 1.20.0 (#357)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

Author: release-please[bot]

CHANGELOG.md

@@ -1,5 +1,19 @@
 # Changelog
 
+## [1.20.0](https://www.github.com/googleapis/java-spanner-jdbc/compare/v1.19.0...v1.20.0) (2021-02-23)
+
+
+### Features
+
+* allow setting min/max sessions ([#335](https://www.github.com/googleapis/java-spanner-jdbc/issues/335)) ([a5862a5](https://www.github.com/googleapis/java-spanner-jdbc/commit/a5862a5572721fc898cf9b5f4ab8b99631848110))
+
+
+### Dependencies
+
+* update dependency com.google.cloud:google-cloud-shared-dependencies to v0.19.0 ([fa3721b](https://www.github.com/googleapis/java-spanner-jdbc/commit/fa3721b5d42e0f71247937366f1fa9e3a454beef))
+* update dependency com.google.cloud:google-cloud-spanner-bom to v4 ([#359](https://www.github.com/googleapis/java-spanner-jdbc/issues/359)) ([49aa337](https://www.github.com/googleapis/java-spanner-jdbc/commit/49aa337dae08c4c39a7c32c14f92a7c858ad3dc8))
+* update dependency com.google.cloud:google-cloud-spanner-bom to v4.0.1 ([#366](https://www.github.com/googleapis/java-spanner-jdbc/issues/366)) ([fa3721b](https://www.github.com/googleapis/java-spanner-jdbc/commit/fa3721b5d42e0f71247937366f1fa9e3a454beef))
+
 ## [1.19.0](https://www.github.com/googleapis/java-spanner-jdbc/compare/v1.18.3...v1.19.0) (2021-02-15)
 
 

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>1.19.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner-jdbc:current} -->
+  <version>1.20.0</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>1.19.1-SNAPSHOT</version>
+      <version>1.20.0</version>
     </dependency>
     <!-- {x-version-update-end} -->
 

versions.txt

@@ -1,4 +1,4 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-spanner-jdbc:1.19.0:1.19.1-SNAPSHOT
+google-cloud-spanner-jdbc:1.20.0:1.20.0