chore: regenerate README (#187)

This PR was generated using Autosynth. 🌈


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

```
2020-10-20 08:19:21,603 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-bigqueryconnection/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working directory clean
2020-10-20 08:19:22,562 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/373b0c46-1fa2-45d0-b34f-331102755f75/targets

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Author: yoshi-automation

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

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-bigqueryconnection.git",
-        "sha": "c167ec888021ab0e98130c74290a9649227e4c52"
+        "sha": "9594913e18cd4adacaee878b6986e3e2018e6720"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "3c1fd09ba8d1c7b7092662f6f8330f521d4e7739"
+        "sha": "5a506ec8765cc04f7e29f888b8e9b257d9a7ae11"
       }
     }
   ]

README.md

@@ -27,11 +27,11 @@ If you are using Maven, add this to your pom.xml file:
 
 If you are using Gradle, add this to your dependencies
 ```Groovy
-compile 'com.google.cloud:google-cloud-bigqueryconnection:0.4.0'
+compile 'com.google.cloud:google-cloud-bigqueryconnection:0.4.1'
 ```
 If you are using SBT, add this to your dependencies
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-bigqueryconnection" % "0.4.0"
+libraryDependencies += "com.google.cloud" % "google-cloud-bigqueryconnection" % "0.4.1"
 ```
 
 ## Authentication