chore: regenerate README with libraries-bom 4.3.0 (#107)

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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>4.2.0</version>
+      <version>4.3.0</version>
       <type>pom</type>
       <scope>import</scope>
     </dependency>

synth.metadata

@@ -1,13 +1,12 @@
 {
-  "updateTime": "2020-03-19T09:44:54.773412Z",
+  "updateTime": "2020-03-23T22:19:44.860500Z",
   "sources": [
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
         "sha": "0e9f1f60ded9ad1c2e725e37719112f5b487ab65",
-        "internalRef": "301480457",
-        "log": "0e9f1f60ded9ad1c2e725e37719112f5b487ab65\nbazel: Use latest release of gax_java\n\nPiperOrigin-RevId: 301480457\n\n5058c1c96d0ece7f5301a154cf5a07b2ad03a571\nUpdate GAPIC v2 with batching parameters for Logging API\n\nPiperOrigin-RevId: 301443847\n\n"
+        "internalRef": "301480457"
       }
     },
     {