chore(postgresql-dialect): release 0.54.2-SNAPSHOT (GoogleCloudPlatform#4400)

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

Author: release-please[bot]

pom.xml

@@ -43,7 +43,7 @@
 
   <modelVersion>4.0.0</modelVersion>
   <artifactId>google-cloud-spanner-pgadapter</artifactId>
-  <version>0.54.1</version><!-- {x-version-update:google-cloud-spanner-pgadapter:current} -->
+  <version>0.54.2-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner-pgadapter:current} -->
   <name>Google Cloud Spanner PostgreSQL Adapter</name>
   <packaging>jar</packaging>
   <description>

versions.txt

@@ -1,4 +1,4 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-spanner-pgadapter:0.54.1:0.54.1
+google-cloud-spanner-pgadapter:0.54.1:0.54.2-SNAPSHOT