chore: regenerate README (#1127)

This PR was generated using Autosynth. 🌈


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

```
2021-02-20 00:13:15,091 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-bigquery/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-02-20 00:13:16,752 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/a0b0abf6-a4d1-4d17-907b-c6a17d10e414/targets

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

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

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-bigquery.git",
-        "sha": "399bfc37559c3e7783a57ce3eac60840b999f6ef"
+        "sha": "41240a57ec81d8c59ca8fb468f84ee2ccfb6e827"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "b32c87d2c087fb2a841acc623ab540105de821af"
+        "sha": "79ab0b44a2cc7d803d07c107f9faf07729fc4012"
       }
     }
   ]

README.md

@@ -40,7 +40,7 @@ If you are using Maven without BOM, add this to your dependencies:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-bigquery</artifactId>
-  <version>1.127.2</version>
+  <version>1.127.3</version>
 </dependency>
 
 ```
@@ -53,12 +53,12 @@ compile 'com.google.cloud:google-cloud-bigquery'
 ```
 If you are using Gradle without BOM, add this to your dependencies
 ```Groovy
-compile 'com.google.cloud:google-cloud-bigquery:1.127.2'
+compile 'com.google.cloud:google-cloud-bigquery:1.127.3'
 ```
 
 If you are using SBT, add this to your dependencies
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-bigquery" % "1.127.2"
+libraryDependencies += "com.google.cloud" % "google-cloud-bigquery" % "1.127.3"
 ```
 
 ## Authentication