chore: regenerate README (#527)

This PR was generated using Autosynth. 🌈


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

```
2021-06-18 22:04:25,761 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-resourcemanager/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-06-18 22:04:26,995 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/ee918a59-c779-4dec-9100-3a8d92fff7d7/targets

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

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-resourcemanager.git",
-        "sha": "7ce3fc5a27919d39577cc48df09203fbbb56a868"
+        "sha": "84f9d8092d53f4450b70bb008616d55c680d8b20"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "740366bbb9a7e0f4b77fc75dc26be1d3a376c3e0"
+        "sha": "1c0c698705e668ccb3d68556ae7260f16ce63a6e"
       }
     }
   ]

README.md

@@ -54,12 +54,12 @@ compile 'com.google.cloud:google-cloud-resourcemanager'
 ```
 If you are using Gradle without BOM, add this to your dependencies
 ```Groovy
-compile 'com.google.cloud:google-cloud-resourcemanager:0.119.6-alpha'
+compile 'com.google.cloud:google-cloud-resourcemanager:0.119.7-alpha'
 ```
 
 If you are using SBT, add this to your dependencies
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-resourcemanager" % "0.119.6-alpha"
+libraryDependencies += "com.google.cloud" % "google-cloud-resourcemanager" % "0.119.7-alpha"
 ```
 
 ## Authentication