chore: regenerate README (#281)

This PR was generated using Autosynth. 🌈


<details><summary>Log from Synthtool</summary>

```
2021-04-09 22:45:32,550 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-grafeas/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-04-09 22:45:33,850 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

```
</details>

Full log will be available here:
https://source.cloud.google.com/results/invocations/9850c5a8-b479-48cf-88b3-7366d1d5426d/targets

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.github/readme/synth.metadata/synth.metadata

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-grafeas.git",
-        "sha": "72d57bcc1bccf901a72c823d69ec1ad15a290004"
+        "sha": "a97811cb12b12b8eaba545ec4ef88632e1b5b1d0"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "ff39353f34a36e7643b86e97724e4027ab466dc6"
+        "sha": "d9ddac83a22a600dd33854c9d835a4fe52284207"
       }
     }
   ]

README.md

@@ -17,18 +17,18 @@ If you are using Maven, add this to your pom.xml file:
 <dependency>
   <groupId>io.grafeas</groupId>
   <artifactId>grafeas</artifactId>
-  <version>1.1.0</version>
+  <version>1.1.2</version>
 </dependency>
 ```
 
 If you are using Gradle without BOM, add this to your dependencies
 ```Groovy
-compile 'io.grafeas:grafeas:1.1.0'
+compile 'io.grafeas:grafeas:1.1.2'
 ```
 
 If you are using SBT, add this to your dependencies
 ```Scala
-libraryDependencies += "io.grafeas" % "grafeas" % "1.1.0"
+libraryDependencies += "io.grafeas" % "grafeas" % "1.1.2"
 ```
 
 ## Authentication