build: rebuild yarn lock from scratch (#36377)

Rebuild the yarn lock file from scratch to collapse instances where
one package is able to satisfy multiple dependencies.  Currently we
have some situations where we have multiple versions when one would
work.

Example:
```
"@babel/code-frame@^7.0.0":
  version "7.0.0"
  resolved "https://registry.yarnpkg.com/@babel/cod
  integrity sha512-OfC2uemaknXr87bdLUkWog7nYuliM9Ij
  dependencies:
    "@babel/highlight" "^7.0.0"

"@babel/code-frame@^7.5.5":
  version "7.5.5"
  resolved "https://registry.yarnpkg.com/@babel/cod
  integrity sha512-27d4lZoomVyo51VegxI20xZPuSHusqbQ
  dependencies:
    "@babel/highlight" "^7.0.0"

"@babel/code-frame@^7.8.3":
  version "7.8.3"
  resolved "https://registry.yarnpkg.com/@babel/cod
  integrity sha512-a9gxpmdXtZEInkCSHUJDLHZVBgb1QS0j
  dependencies:
    "@babel/highlight" "^7.8.3"
```

becomes

```
"@babel/code-frame@^7.0.0", "@babel/code-frame@^7.5.5", "@babel/code-frame@^7.8.3":
  version "7.8.3"
  resolved "https://registry.yarnpkg.com/@babel/cod
  integrity sha512-a9gxpmdXtZEInkCSHUJDLHZVBgb1QS0j
  dependencies:
    "@babel/highlight" "^7.8.3"
```

PR Close #36377

package.json

@@ -58,7 +58,7 @@
     "@bazel/rollup": "1.5.0",
     "@bazel/terser": "1.5.0",
     "@bazel/typescript": "1.5.0",
-    "@microsoft/api-extractor": "^7.3.9",
+    "@microsoft/api-extractor": "~7.6.0",
     "@schematics/angular": "9.0.3",
     "@types/angular": "^1.6.47",
     "@types/babel__core": "^7.1.6",
@@ -115,7 +115,7 @@
     "karma-jasmine": "^2.0.1",
     "karma-requirejs": "^1.1.0",
     "karma-sourcemap-loader": "^0.3.7",
-    "magic-string": "^0.25.0",
+    "magic-string": "0.25.4",
     "materialize-css": "1.0.0",
     "minimatch": "^3.0.4",
     "minimist": "1.2.0",