chore: regenerate README (#266)

This PR was generated using Autosynth. 🌈


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

```
2020-10-20 08:20:19,438 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-tasks/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working directory clean
2020-10-20 08:20:20,381 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/9e94038c-105e-4408-bd21-b412e97bd2d1/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-tasks.git",
-        "sha": "775a19f1ffa991a6e6726c7bbad7ddb1748d3593"
+        "sha": "1ccdc63f1803e9d71ede05aea157be9791acbee0"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "d5d03413e1879108b5ade8839ce38de01be652da"
+        "sha": "5a506ec8765cc04f7e29f888b8e9b257d9a7ae11"
       }
     }
   ]

README.md

@@ -45,11 +45,11 @@ If you are using Maven without BOM, add this to your dependencies:
 
 If you are using Gradle, add this to your dependencies
 ```Groovy
-compile 'com.google.cloud:google-cloud-tasks:1.30.4'
+compile 'com.google.cloud:google-cloud-tasks:1.30.5'
 ```
 If you are using SBT, add this to your dependencies
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-tasks" % "1.30.4"
+libraryDependencies += "com.google.cloud" % "google-cloud-tasks" % "1.30.5"
 ```
 
 ## Authentication