chore: regenerate README (#265)

This PR was generated using Autosynth. 🌈


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

```
2020-12-15 16:27:34,689 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-bigqueryconnection/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2020-12-15 16:27:35,544 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/be0a8522-7b77-4063-9d5e-e73e9d0ee7c9/targets

- [ ] To automatically regenerate this PR, check this box.

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

@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-bigqueryconnection.git",
-        "sha": "dc6a93da6f271915d7226cfdb01d5fc91c90db4a"
+        "sha": "bf3c9d7913d1fd053d18e7f32feaa8f3ba6e3e94"
       }
     },
     {

README.md

@@ -17,7 +17,7 @@ If you are using Maven, add this to your pom.xml file:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-bigqueryconnection</artifactId>
-  <version>1.0.4</version>
+  <version>1.0.5</version>
 </dependency>
 
 ```