build: force resolution of @types/copy-webpack-plugin/webpack

This resolution is needed as otherwise if webpack versions are not on the exact version the compilation will fail.

Example of such errors;
```
packages/angular_devkit/build_angular/src/webpack/configs/common.ts:219:7 - error TS2345: Argument of type 'CopyPlugin' is not assignable to parameter of type '{ apply(compiler: Compiler): void; }'.
  Types of property 'apply' are incompatible.
    Type '(compiler: import("/home/circleci/ng/node_modules/@types/copy-webpack-plugin/node_modules/webpack/types").Compiler) => void' is not assignable to type '(compiler: import("/home/circleci/ng/node_modules/webpack/types").Compiler) => void'.
      Types of parameters 'compiler' and 'compiler' are incompatible.
        Type 'import("/home/circleci/ng/node_modules/webpack/types").Compiler' is not assignable to type 'import("/home/circleci/ng/node_modules/@types/copy-webpack-plugin/node_modules/webpack/types").Compiler'.
          The types of 'hooks.shouldEmit' are incompatible between these types.
            Type 'import("/home/circleci/ng/node_modules/tapable/tapable").SyncBailHook<[import("/home/circleci/ng/node_modules/webpack/types").Compilation], boolean, import("/home/circleci/ng/node_modules/tapable/tapable").UnsetAdditionalOptions>' is not assignable to type 'import("/home/circleci/ng/node_modules/tapable/tapable").SyncBailHook<[import("/home/circleci/ng/node_modules/@types/copy-webpack-plugin/node_modules/webpack/types").Compilation], boolean, import("/home/circleci/ng/node_modules/tapable/tapable").UnsetAdditionalOptions>'.

219       new CopyWebpackPlugin({
          ~~~~~~~~~~~~~~~~~~~~~~~
220         patterns: copyWebpackPluginPatterns,
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
221       }),
    ~~~~~~~~
```

(cherry picked from commit fdbbcfd)

Author: alan-agius4

package.json

@@ -61,6 +61,9 @@
       "@angular/compiler-cli"
     ]
   },
+  "resolutions": {
+    "**/@types/copy-webpack-plugin/webpack": "5.36.1"
+  },
   "devDependencies": {
     "@angular/animations": "12.0.0-rc.0",
     "@angular/cdk": "11.2.10",

yarn.lock

@@ -11740,7 +11740,7 @@ webpack-subresource-integrity@1.5.2:
   dependencies:
     webpack-sources "^1.3.0"
 
-webpack@5.36.1:
+webpack@5.36.1, webpack@^5.1.0:
   version "5.36.1"
   resolved "https://registry.yarnpkg.com/webpack/-/webpack-5.36.1.tgz#d82bad3384f84ed45a8de3844c31730f56361ab7"
   integrity sha512-2u25a82T+6quAxSlzEpN/R/RICwt20ONU3z3Ko05S8KVH9FXILcBYb2hD/rQtZT5y7lRAIsIIs05pdndY7ourQ==