build(java): skip javadoc tests during dependencies test (#420)

This PR was generated using Autosynth. 🌈 Synth log will be available here: https://source.cloud.google.com/results/invocations/8f6e266b-71d9-4625-83d9-fd23ffad7a12/targets - [ ] To automatically regenerate this PR, check this box. (May take up to 24 hours.) Source-Link: googleapis/synthtool@5b0e159

Author: yoshi-automation

.kokoro/dependencies.sh

@@ -33,6 +33,7 @@ export MAVEN_OPTS="-Xmx1024m -XX:MaxPermSize=128m"
 retry_with_backoff 3 10 \
  mvn install -B -V -ntp \
  -DskipTests=true \
+ -Dmaven.javadoc.skip=true \
  -Dclirr.skip=true
 
 mvn -B dependency:analyze -DfailOnWarning=true

synth.metadata

@@ -4,7 +4,7 @@
  "git": {
  "name": ".",
  "remote": "https://github.com/googleapis/java-texttospeech.git",
- "sha": "88414d270a76e364c70f91ea3dad47a64ef8bf70"
+ "sha": "47cb50cebbc275703e4814b1c9ee766adce9a005"
  }
  },
  {
@@ -27,7 +27,7 @@
  "git": {
  "name": "synthtool",
  "remote": "https://github.com/googleapis/synthtool.git",
- "sha": "572ef8f70edd9041f5bcfa71511aed6aecfc2098"
+ "sha": "5b0e1592dd7d70b485e157ea4b3eb1704ecbd015"
  }
  }
  ],