Bump @angular/compiler from 9.1.7 to 9.1.9 (#8369)

Bumps [@angular/compiler](https://github.com/angular/angular/tree/HEAD/packages/compiler) from 9.1.7 to 9.1.9.
- [Release notes](https://github.com/angular/angular/releases)
- [Changelog](https://github.com/angular/angular/blob/master/CHANGELOG.md)
- [Commits](https://github.com/angular/angular/commits/9.1.9/packages/compiler)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

package.json

@@ -19,7 +19,7 @@
     "bin"
   ],
   "dependencies": {
-    "@angular/compiler": "9.1.7",
+    "@angular/compiler": "9.1.9",
     "@babel/code-frame": "7.8.3",
     "@babel/parser": "7.9.6",
     "@glimmer/syntax": "0.53.0",

yarn.lock

@@ -2,10 +2,10 @@
 # yarn lockfile v1
 
 
-"@angular/compiler@9.1.7":
-  version "9.1.7"
-  resolved "https://registry.yarnpkg.com/@angular/compiler/-/compiler-9.1.7.tgz#e094f99f8742994761adeb1fd8090b21d2abff98"
-  integrity sha512-BiHJ3rAd00aJkur7ohnXjqBmz2QkSTAAFWLuBTYuHysxP4zJD54y4uUtsrCUReKL+8dkUv8AcfXBAkCBLvBUYg==
+"@angular/compiler@9.1.9":
+  version "9.1.9"
+  resolved "https://registry.yarnpkg.com/@angular/compiler/-/compiler-9.1.9.tgz#cbf678ee28a0811a8ef3ee7be565d4911ff28ec7"
+  integrity sha512-kjFgaTB2ckr9lgmkS1dOGRT7kmzpQueydxsxXSHWgICNVE6F/u1PHyeSOyJRpxW0GnrkLq3QM2EUFnQGGga5bg==
 
 "@babel/code-frame@7.0.0":
   version "7.0.0"