Bump gatsby-plugin-sass from 2.3.12 to 2.8.0 (#224)

Bumps [gatsby-plugin-sass](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-sass) from 2.3.12 to 2.8.0.
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-sass/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-sass@2.8.0/packages/gatsby-plugin-sass)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -14,7 +14,7 @@
     "gatsby-plugin-offline": "^3.2.27",
     "gatsby-plugin-prefetch-google-fonts": "^1.4.3",
     "gatsby-plugin-react-helmet": "^3.3.2",
-    "gatsby-plugin-sass": "^2.3.12",
+    "gatsby-plugin-sass": "^2.8.0",
     "gatsby-plugin-sharp": "^2.6.34",
     "gatsby-source-filesystem": "^2.3.29",
     "gatsby-transformer-sharp": "^2.5.14",

yarn.lock

@@ -963,10 +963,10 @@
     core-js "^2.5.7"
     regenerator-runtime "^0.11.1"
 
-"@babel/runtime@^7.0.0", "@babel/runtime@^7.10.2", "@babel/runtime@^7.10.3", "@babel/runtime@^7.11.2", "@babel/runtime@^7.2.0", "@babel/runtime@^7.3.4", "@babel/runtime@^7.5.5", "@babel/runtime@^7.7.2", "@babel/runtime@^7.8.4":
-  version "7.11.2"
-  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.11.2.tgz#f549c13c754cc40b87644b9fa9f09a6a95fe0736"
-  integrity sha512-TeWkU52so0mPtDcaCTxNBI/IHiz0pZgr8VEFqXFtZWpYD08ZB6FaSwVAS8MKRQAP3bYKiVjwysOJgMFY28o6Tw==
+"@babel/runtime@^7.0.0", "@babel/runtime@^7.10.2", "@babel/runtime@^7.10.3", "@babel/runtime@^7.11.2", "@babel/runtime@^7.12.5", "@babel/runtime@^7.2.0", "@babel/runtime@^7.3.4", "@babel/runtime@^7.5.5", "@babel/runtime@^7.7.2", "@babel/runtime@^7.8.4":
+  version "7.12.5"
+  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.12.5.tgz#410e7e487441e1b360c29be715d870d9b985882e"
+  integrity sha512-plcc+hbExy3McchJCEQG3knOsuh3HH+Prx1P6cLIkET/0dLuQDEnrT+s27Axgc9bqfsmNUNHfscgMUdBpC9xfg==
   dependencies:
     regenerator-runtime "^0.13.4"
 
@@ -7055,12 +7055,12 @@ gatsby-plugin-react-helmet@^3.3.2:
   dependencies:
     "@babel/runtime" "^7.10.3"
 
-gatsby-plugin-sass@^2.3.12:
-  version "2.3.12"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-sass/-/gatsby-plugin-sass-2.3.12.tgz#4ebdf2d541004e60a5d108eb1302a43b16ceeeaf"
-  integrity sha512-cQHp4bvK3a0xId4Q9K9/1ejGVMMOm/1I28ry7quVoHVomSB4SwNJpMTGSgSYAKn3gjsveUyL+ceCRWeiIavkPA==
+gatsby-plugin-sass@^2.8.0:
+  version "2.8.0"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-sass/-/gatsby-plugin-sass-2.8.0.tgz#98212cd9bb0e5a9aa7ce86ee1dd9ea078520f576"
+  integrity sha512-lUEM5f4bPr6+m8cgB0uq6YBSbqIUxk8tfIthGmsFVbAulnrGBswMRSynyNSAE5APWmUGqwp9GuATDdsV+B5BVg==
   dependencies:
-    "@babel/runtime" "^7.10.3"
+    "@babel/runtime" "^7.12.5"
     sass-loader "^7.3.1"
 
 gatsby-plugin-sharp@^2.6.34: