chore: regenerate README (#252)

This PR was generated using Autosynth. 🌈


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

```
2020-11-04 00:28:49,231 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-accessapproval/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working directory clean
2020-11-04 00:28:50,147 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/79499824-60f0-4931-959a-f1be860a77c4/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-accessapproval.git",
-        "sha": "a7d91483c420d9eddba083d679c2f3775ba569ae"
+        "sha": "348ba7997962749cac85bcaa357ee71a5166d495"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "b19b401571e77192f8dd38eab5fb2300a0de9324"
+        "sha": "ba9918cd22874245b55734f57470c719b577e591"
       }
     }
   ]

README.md

@@ -17,7 +17,7 @@ If you are using Maven with [BOM][libraries-bom], add this to your pom.xml file
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>libraries-bom</artifactId>
-      <version>13.4.0</version>
+      <version>14.4.1</version>
       <type>pom</type>
       <scope>import</scope>
     </dependency>