chore: regenerate README (#354)

This PR was generated using Autosynth. 🌈


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

```
2020-12-10 23:47:36,012 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-video-intelligence/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2020-12-10 23:47:37,050 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/793ed302-10e5-414a-adf0-c42fed12a6d9/targets

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

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-video-intelligence.git",
-        "sha": "32caca2141e4305edc389c8e6618d00ff6474c6e"
+        "sha": "376396387191380a9f86cfc06e2af65abeddc06e"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "3559dd8cb634347737632776ef4089443eacdb4f"
+        "sha": "996775eca5fd934edac3c2ae34b80ff0395b1717"
       }
     }
   ]

README.md

@@ -54,11 +54,11 @@ 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-video-intelligence:1.5.5'
+compile 'com.google.cloud:google-cloud-video-intelligence:1.5.6'
 ```
 If you are using SBT, add this to your dependencies
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-video-intelligence" % "1.5.5"
+libraryDependencies += "com.google.cloud" % "google-cloud-video-intelligence" % "1.5.6"
 ```
 
 ## Authentication
@@ -168,6 +168,8 @@ Java 8 OSX | [![Kokoro CI][kokoro-badge-image-3]][kokoro-badge-link-3]
 Java 8 Windows | [![Kokoro CI][kokoro-badge-image-4]][kokoro-badge-link-4]
 Java 11 | [![Kokoro CI][kokoro-badge-image-5]][kokoro-badge-link-5]
 
+Java is a registered trademark of Oracle and/or its affiliates.
+
 [product-docs]: https://cloud.google.com/video-intelligence/docs/
 [javadocs]: https://googleapis.dev/java/google-cloud-video-intelligence/latest/
 [kokoro-badge-image-1]: http://storage.googleapis.com/cloud-devrel-public/java/badges/java-video-intelligence/java7.svg