chore: regenerate README (googleapis#487)

This PR was generated using Autosynth. 🌈


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

```
2021-05-14 02:14:58,100 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-resourcemanager/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-05-14 02:14:59,337 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/c8a10eab-8d29-46cc-a27b-38ca405c029f/targets

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java-resourcemanager/.github/readme/synth.metadata/synth.metadata

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-resourcemanager.git",
-        "sha": "9119b82b773df954af7fed93de6a0373ff03ef0d"
+        "sha": "9342259ff6df37c45dd0f02dedecb869fecdbd9d"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "bd8281a06cc7f84906e04d4843c1d3d386a980cd"
+        "sha": "4f4b1b9b8d8b52f1e9e4a76165896debce5ab7f1"
       }
     }
   ]

java-resourcemanager/README.md

@@ -41,7 +41,7 @@ If you are using Maven without BOM, add this to your dependencies:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-resourcemanager</artifactId>
-  <version>0.119.3-alpha</version>
+  <version>0.119.4-alpha</version>
 </dependency>
 
 ```