chore: regenerate README (#543)

This PR was generated using Autosynth. 🌈


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

```
2021-06-10 15:11:16,761 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-vision/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-06-10 15:11:18,002 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/f46462ee-c191-455b-b0b0-e35e10f5d0f3/targets

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

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-vision.git",
-        "sha": "06d9ad1565c7f7f54ce783f0e2dd65d178fd17c5"
+        "sha": "c32497eee85f6cb2d625819997c977f06cf89207"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "2430f8d90ed8a508e8422a3a7191e656d5a6bf53"
+        "sha": "5cae043787729a908ed0cab28ca27baf9acee3c4"
       }
     }
   ]

README.md

@@ -52,12 +52,12 @@ compile 'com.google.cloud:google-cloud-vision'
 ```
 If you are using Gradle without BOM, add this to your dependencies
 ```Groovy
-compile 'com.google.cloud:google-cloud-vision:1.103.1'
+compile 'com.google.cloud:google-cloud-vision:1.103.2'
 ```
 
 If you are using SBT, add this to your dependencies
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-vision" % "1.103.1"
+libraryDependencies += "com.google.cloud" % "google-cloud-vision" % "1.103.2"
 ```
 
 ## Authentication