chore: regenerate README versions (#144)

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Author: yoshi-automation

README.md

@@ -17,7 +17,7 @@ If you are using Maven with [BOM][libraries-bom], add this to your pom.xml file
  <dependency>
  <groupId>com.google.cloud</groupId>
  <artifactId>libraries-bom</artifactId>
- <version>7.0.0</version>
+ <version>8.0.0</version>
  <type>pom</type>
  <scope>import</scope>
  </dependency>
@@ -38,7 +38,7 @@ If you are using Maven without BOM, add this to your dependencies:
 <dependency>
  <groupId>com.google.cloud</groupId>
  <artifactId>google-cloud-billing</artifactId>
- <version>1.0.2</version>
+ <version>1.1.0</version>
 </dependency>
 
 ```

synth.metadata

@@ -4,7 +4,7 @@
  "git": {
  "name": ".",
  "remote": "https://github.com/googleapis/java-billing.git",
- "sha": "4b171ddd0495d23306a2ac30a73977a80d0d6eb7"
+ "sha": "8c0e313a85f261978a870da20314fab71ae9a6e0"
  }
  },
  {