chore(main): release 1.2.1-SNAPSHOT (#469)

🤖 I have created a release *beep* *boop*
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### Updating meta-information for bleeding-edge SNAPSHOT release.

---
This PR was generated with [Release Please](https://togithub.com/googleapis/release-please). See [documentation](https://togithub.com/googleapis/release-please#release-please).

Author: release-please[bot]

pom.xml

@@ -8,7 +8,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>pubsublite-kafka-parent</artifactId>
-  <version>1.2.0</version><!-- {x-version-update:pubsublite-kafka:current} -->
+  <version>1.2.1-SNAPSHOT</version><!-- {x-version-update:pubsublite-kafka:current} -->
   <packaging>pom</packaging>
   <name>Pub/Sub Lite Kafka Parent</name>
   <url>https://github.com/googleapis/java-pubsublite-kafka</url>

pubsublite-kafka-auth/pom.xml

@@ -3,12 +3,12 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>pubsublite-kafka-parent</artifactId>
-    <version>1.2.0</version><!-- {x-version-update:pubsublite-kafka:current} -->
+    <version>1.2.1-SNAPSHOT</version><!-- {x-version-update:pubsublite-kafka:current} -->
   </parent>
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>pubsublite-kafka-auth</artifactId>
-  <version>1.2.0</version><!-- {x-version-update:pubsublite-kafka:current} -->
+  <version>1.2.1-SNAPSHOT</version><!-- {x-version-update:pubsublite-kafka:current} -->
   <packaging>jar</packaging>
   <name>Pub/Sub Lite Kafka Auth</name>
   <url>https://github.com/googleapis/java-pubsublite-kafka</url>

pubsublite-kafka/pom.xml

@@ -3,12 +3,12 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>pubsublite-kafka-parent</artifactId>
-    <version>1.2.0</version><!-- {x-version-update:pubsublite-kafka:current} -->
+    <version>1.2.1-SNAPSHOT</version><!-- {x-version-update:pubsublite-kafka:current} -->
   </parent>
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.cloud</groupId>
   <artifactId>pubsublite-kafka</artifactId>
-  <version>1.2.0</version><!-- {x-version-update:pubsublite-kafka:current} -->
+  <version>1.2.1-SNAPSHOT</version><!-- {x-version-update:pubsublite-kafka:current} -->
   <packaging>jar</packaging>
   <name>Pub/Sub Lite Kafka Shim</name>
   <url>https://github.com/googleapis/java-pubsublite-kafka</url>

samples/snapshot/pom.xml

@@ -42,12 +42,12 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>pubsublite-kafka</artifactId>
-      <version>1.2.0</version><!-- {x-version-update:pubsublite-kafka:current} -->
+      <version>1.2.1-SNAPSHOT</version><!-- {x-version-update:pubsublite-kafka:current} -->
     </dependency>
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>pubsublite-kafka-auth</artifactId>
-      <version>1.2.0</version><!-- {x-version-update:pubsublite-kafka:current} -->
+      <version>1.2.1-SNAPSHOT</version><!-- {x-version-update:pubsublite-kafka:current} -->
     </dependency>
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>

versions.txt

@@ -1,4 +1,4 @@
 # Format:
 # module:released-version:current-version
 
-pubsublite-kafka:1.2.0:1.2.0
+pubsublite-kafka:1.2.0:1.2.1-SNAPSHOT