build: update ng-packagr to version ~5.6.0 (#15793)

Author: renovate-bot

packages/angular_devkit/build_ng_packagr/package.json

@@ -17,7 +17,7 @@
     "@angular/compiler": "9.0.0-next.9",
     "@angular/compiler-cli": "9.0.0-next.9",
     "@angular-devkit/core": "0.0.0",
-    "ng-packagr": "~5.5.0",
+    "ng-packagr": "~5.6.0",
     "tslib": "^1.10.0"
   }
 }

yarn.lock

@@ -7172,10 +7172,10 @@ neo-async@^2.5.0, neo-async@^2.6.0, neo-async@^2.6.1:
   resolved "https://registry.yarnpkg.com/neo-async/-/neo-async-2.6.1.tgz#ac27ada66167fa8849a6addd837f6b189ad2081c"
   integrity sha512-iyam8fBuCUpWeKPGpaNMetEocMt364qkCsfL9JuhjXX6dRnguRVOfk2GZaDpPjcOKiiXCPINZC1GczQ7iTq3Zw==
 
-ng-packagr@~5.5.0:
-  version "5.5.1"
-  resolved "https://registry.yarnpkg.com/ng-packagr/-/ng-packagr-5.5.1.tgz#2d27968c1079fba12ff2ae542beab82747a92e7b"
-  integrity sha512-GT6QK5WAirQwALdeJPiXdgRd5PzRqcknb/C/G+cCDEbUFri4oGVmns2Nl4I0FGg/cRn6nXTxRiUunOSqZ3Lehw==
+ng-packagr@~5.6.0:
+  version "5.6.1"
+  resolved "https://registry.yarnpkg.com/ng-packagr/-/ng-packagr-5.6.1.tgz#c3664134d28289383a2bd95f09efa685432ffea6"
+  integrity sha512-Z7pOtjlWQe9eBGq6iDSWqBzpxq7IXO8tZssCZDv6v+6IvsgWVxbIndDr7g6IZyVJQriliCRjFQ70w3XoX4dSKw==
   dependencies:
     ajv "^6.10.2"
     autoprefixer "^9.6.0"