chore: regenerate README (#319)

This PR was generated using Autosynth. 🌈


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

```
2020-12-14 19:59:26,218 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-websecurityscanner/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2020-12-14 19:59:27,165 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/b936e53c-0b25-4966-a9d5-1e475da3447b/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-websecurityscanner.git",
-        "sha": "1d2c9601b10e92c6541d157f3e5e65b0b0848e72"
+        "sha": "91e109ef0feefa509787f6bbc18cc3cba076726a"
       }
     },
     {

README.md

@@ -38,7 +38,7 @@ If you are using Maven without BOM, add this to your dependencies:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-websecurityscanner</artifactId>
-  <version>1.0.6</version>
+  <version>1.0.7</version>
 </dependency>
 
 ```