fix: package.json & yarn.lock to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-DECODEURICOMPONENT-3149970
- https://snyk.io/vuln/SNYK-JS-JSONSCHEMA-1920922
- https://snyk.io/vuln/SNYK-JS-QS-3153490

package.json

@@ -14,21 +14,21 @@
     "@testing-library/react-hooks": "3.4.1",
     "@types/react-slick": "0.23.4",
     "axios": "0.21.1",
-    "gatsby": "3.0.0",
+    "gatsby": "4.14.0",
     "gatsby-image": "2.4.20",
     "gatsby-plugin-alias-imports": "1.0.5",
     "gatsby-plugin-manifest": "2.4.33",
     "gatsby-plugin-offline": "3.2.30",
     "gatsby-plugin-react-helmet": "3.3.12",
-    "gatsby-plugin-sharp": "2.6.38",
+    "gatsby-plugin-sharp": "2.13.0",
     "gatsby-plugin-sitemap": "2.4.14",
     "gatsby-plugin-styled-components": "3.3.12",
     "gatsby-plugin-typescript": "2.4.21",
     "gatsby-remark-autolink-headers": "4.11.0",
     "gatsby-remark-external-links": "0.0.4",
     "gatsby-source-filesystem": "2.3.32",
     "gatsby-transformer-remark": "2.15.0",
-    "gatsby-transformer-sharp": "2.5.16",
+    "gatsby-transformer-sharp": "2.11.0",
     "jest-mock-axios": "4.2.1",
     "normalize.css": "8.0.1",
     "react": "16.9.0",