deps: bump @primer/react from 36.27.0 to 37.5.0 (#1384)

Author: dependabot[bot]

gatsby-config.mjs

@@ -66,6 +66,7 @@ const config = {
     DEV_SSR: !!process.env.GATSBY_DEV_SSR,
   },
   plugins: [
+    'gatsby-plugin-postcss',
     'gatsby-plugin-styled-components',
     'gatsby-transformer-yaml',
     {

jest.config.js

@@ -4,4 +4,7 @@ module.exports = {
   transform: {
     '^.+\\.jsx?$': `<rootDir>/jest-preprocess.js`,
   },
+  moduleNameMapper: {
+    '.+\\.(css|styl|less|sass|scss)$': `identity-obj-proxy`,
+  },
 }