fix(build): Lock plugin-transform-spread for now (#6781)

See gatsbyjs/gatsby#29326

Author: evanpurkhiser

package.json

@@ -70,6 +70,7 @@
     "typescript": "^3.9.7"
   },
   "resolutions": {
+    "@babel/plugin-transform-spread": "7.12.1",
     "@types/react": "^16.14.40",
     "@types/react-dom": "^16.9.19",
     "@typescript-eslint/eslint-plugin": "^5.53.0",

yarn.lock

@@ -892,12 +892,12 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.12.13"
 
-"@babel/plugin-transform-spread@^7.11.0", "@babel/plugin-transform-spread@^7.12.1", "@babel/plugin-transform-spread@^7.12.13":
-  version "7.12.13"
-  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-spread/-/plugin-transform-spread-7.12.13.tgz#ca0d5645abbd560719c354451b849f14df4a7949"
-  integrity sha512-dUCrqPIowjqk5pXsx1zPftSq4sT0aCeZVAxhdgs3AMgyaDmoUT0G+5h3Dzja27t76aUEIJWlFgPJqJ/d4dbTtg==
+"@babel/plugin-transform-spread@7.12.1", "@babel/plugin-transform-spread@^7.11.0", "@babel/plugin-transform-spread@^7.12.1", "@babel/plugin-transform-spread@^7.12.13":
+  version "7.12.1"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-spread/-/plugin-transform-spread-7.12.1.tgz#527f9f311be4ec7fdc2b79bb89f7bf884b3e1e1e"
+  integrity sha512-vuLp8CP0BE18zVYjsEBZ5xoCecMK6LBMMxYzJnh01rxQRvhNhH1csMMmBfNo5tGpGO+NhdSNW2mzIvBu3K1fng==
   dependencies:
-    "@babel/helper-plugin-utils" "^7.12.13"
+    "@babel/helper-plugin-utils" "^7.10.4"
     "@babel/helper-skip-transparent-expression-wrappers" "^7.12.1"
 
 "@babel/plugin-transform-sticky-regex@^7.12.13":