build(java): update renovate config to mark conformance tests as a test commit type (#1398)

This PR was generated using Autosynth. 🌈 Synth log will be available here: https://source.cloud.google.com/results/invocations/ce89d179-a8ad-4c3d-9e27-c395c59b8b3a/targets - [ ] To automatically regenerate this PR, check this box. (May take up to 24 hours.) Source-Link: googleapis/synthtool@9a238a0

Author: yoshi-automation

renovate.json

@@ -50,7 +50,8 @@
  "^junit:junit",
  "^com.google.truth:truth",
  "^org.mockito:mockito-core",
- "^org.objenesis:objenesis"
+ "^org.objenesis:objenesis",
+ "^com.google.cloud:google-cloud-conformance-tests"
  ],
  "semanticCommitType": "test",
  "semanticCommitScope": "deps"

synth.metadata

@@ -4,7 +4,7 @@
  "git": {
  "name": ".",
  "remote": "https://github.com/googleapis/java-spanner.git",
- "sha": "51a4c248b9681fced2d8118f7180f8a61049e2de"
+ "sha": "d28d8a1d710b1cd47ef3b2ca1fa87750a007b5cf"
  }
  },
  {
@@ -19,7 +19,7 @@
  "git": {
  "name": "synthtool",
  "remote": "https://github.com/googleapis/synthtool.git",
- "sha": "e2aa5bcc3356d9e3b8b53de3b5c86226447d3a22"
+ "sha": "9a238a0623879c3de129a376c6085d4a862f6eb9"
  }
  }
  ],