chore: regenerate README (#345)

This PR was generated using Autosynth. 🌈


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

```
2021-03-10 19:56:17,110 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-bigqueryconnection/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-03-10 19:56:18,013 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/523603fa-550b-4190-8397-859c4e4dafe5/targets

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

Author: yoshi-automation

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

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-bigqueryconnection.git",
-        "sha": "90f5aa3b106d5c189a3a8f421585d4bd609b1df8"
+        "sha": "17acd7efe511c2a0a9a9cbe95b7b7358d010f713"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "e5fa6d93e42918dd4a000a80b92be23f5f4c6ac7"
+        "sha": "0b064d767537e0675fc053e53fca473c5c701fb8"
       }
     }
   ]

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>1.0.11</version>
+  <version>1.0.12</version>
 </dependency>
 
 ```