chore: release 0.121.6 (#482)

🤖 I have created a release \*beep\* \*boop\*
---
### [0.121.6](https://www.github.com/googleapis/java-logging-logback/compare/v0.121.5...v0.121.6) (2021-08-11)


### Dependencies

* update dependency com.google.cloud:google-cloud-logging to v3 ([#481](https://www.github.com/googleapis/java-logging-logback/issues/481)) ([9c60863](https://www.github.com/googleapis/java-logging-logback/commit/9c60863d269eecbf8f389a6f88ce810529fc1c48))
---


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

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+### [0.121.6](https://www.github.com/googleapis/java-logging-logback/compare/v0.121.5...v0.121.6) (2021-08-11)
+
+
+### Dependencies
+
+* update dependency com.google.cloud:google-cloud-logging to v3 ([#481](https://www.github.com/googleapis/java-logging-logback/issues/481)) ([9c60863](https://www.github.com/googleapis/java-logging-logback/commit/9c60863d269eecbf8f389a6f88ce810529fc1c48))
+
 ### [0.121.5](https://www.github.com/googleapis/java-logging-logback/compare/v0.121.4...v0.121.5) (2021-08-04)
 
 

pom.xml

@@ -5,7 +5,7 @@
   <modelVersion>4.0.0</modelVersion>
 
   <artifactId>google-cloud-logging-logback</artifactId>
-  <version>0.121.6-alpha-SNAPSHOT</version><!-- {x-version-update:google-cloud-logging-logback:current} -->
+  <version>0.121.6-alpha</version><!-- {x-version-update:google-cloud-logging-logback:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Logging Logback Appender</name>
   <url>https://github.com/googleapis/java-logging-logback</url>

versions.txt

@@ -1,4 +1,4 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-logging-logback:0.121.5-alpha:0.121.6-alpha-SNAPSHOT
+google-cloud-logging-logback:0.121.6-alpha:0.121.6-alpha