feat: add gcf-owl-bot[bot] to ignoreAuthors

* feat: add `gcf-owl-bot[bot]` to `ignoreAuthors`

Related: #1751

* feat: add `yoshi-automation` to `ignoreAuthors`

Source-Author: Daniel Bankhead <danielbankhead@google.com>
Source-Date: Tue May 18 15:08:47 2021 -0700
Source-Repo: googleapis/synthtool
Source-Sha: 7332178a11ddddc91188dc0f25bca1ccadcaa6c6
Source-Link: googleapis/synthtool@7332178

.github/generated-files-bot.yml

@@ -11,3 +11,6 @@ generatedFiles:
   message: '`README.md` is managed by [`synthtool`](https://github.com/googleapis/synthtool). However, a partials file can be used to update the README, e.g.: https://github.com/googleapis/nodejs-storage/blob/master/.readme-partials.yaml'
 - path: 'samples/README.md'
   message: '`samples/README.md` is managed by [`synthtool`](https://github.com/googleapis/synthtool). However, a partials file can be used to update the README, e.g.: https://github.com/googleapis/nodejs-storage/blob/master/.readme-partials.yaml'
+ignoreAuthors:
+- 'gcf-owl-bot[bot]'
+- 'yoshi-automation'

synth.metadata

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/repo-automation-bots.git",
-        "sha": "b564a75643247f7b25ce5da1b981763f8ada2f44"
+        "sha": "93cf30167cc9df9d9ba7832c563985fe2558ace6"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "04573fd73f56791c659832aa84d35a4ec860d6f7"
+        "sha": "7332178a11ddddc91188dc0f25bca1ccadcaa6c6"
       }
     }
   ]