Bump gatsby-plugin-robots-txt from 1.6.8 to 1.6.9 in /packages/website

Bumps [gatsby-plugin-robots-txt](https://github.com/mdreizin/gatsby-plugin-robots-txt) from 1.6.8 to 1.6.9.
- [Release notes](https://github.com/mdreizin/gatsby-plugin-robots-txt/releases)
- [Commits](https://github.com/mdreizin/gatsby-plugin-robots-txt/compare/v1.6.8...v1.6.9)

---
updated-dependencies:
- dependency-name: gatsby-plugin-robots-txt
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

packages/website/package.json

@@ -25,7 +25,7 @@
     "gatsby-plugin-postcss": "^4.11.0",
     "gatsby-plugin-purgecss": "^6.0.2",
     "gatsby-plugin-react-helmet": "^4.11.0",
-    "gatsby-plugin-robots-txt": "^1.6.8",
+    "gatsby-plugin-robots-txt": "^1.6.9",
     "gatsby-plugin-sharp": "^3.11.0",
     "gatsby-plugin-svgr": "^3.0.0-beta.0",
     "gatsby-remark-classes": "^1.0.0",

packages/website/yarn.lock

@@ -6677,10 +6677,10 @@ gatsby-plugin-react-helmet@^4.11.0:
   dependencies:
     "@babel/runtime" "^7.14.6"
 
-gatsby-plugin-robots-txt@^1.6.8:
-  version "1.6.8"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-robots-txt/-/gatsby-plugin-robots-txt-1.6.8.tgz#28968ca767ac4e45bf71b18eb1d363abb55aa6cd"
-  integrity sha512-Lw/r+gBbjvCiVnqJaO24aBUFO0VMZMHgKupy/LLzxxVE8OuEbTpwUv2aYZvtOZIXnKJfdbf/Znu43t7qAp5sdw==
+gatsby-plugin-robots-txt@^1.6.9:
+  version "1.6.9"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-robots-txt/-/gatsby-plugin-robots-txt-1.6.9.tgz#579d18550de1672098aeeb3e6dd8b8f951f3c7a2"
+  integrity sha512-momZLUSGrNsLlbRuHYCD/ToEu8hXhVz80P4UYogsgp1/7IfP/TvSow3tQlb+dm65r0kEmrWgqcX39ZbuxUCPkQ==
   dependencies:
     "@babel/runtime" "^7.14.0"
     generate-robotstxt "^8.0.3"