fix(@angular-devkit/build-angular): update CSSNano and PostCSS to fix serveral security issues

Closes #20606

Author: alan-agius4

package.json

@@ -145,7 +145,7 @@
     "core-js": "3.8.3",
     "critters": "0.0.7",
     "css-loader": "5.0.1",
-    "cssnano": "4.1.11",
+    "cssnano": "5.0.1",
     "debug": "^4.1.1",
     "enhanced-resolve": "5.7.0",
     "express": "4.17.1",
@@ -192,7 +192,7 @@
     "pidusage": "^2.0.17",
     "pnp-webpack-plugin": "1.6.4",
     "popper.js": "^1.14.1",
-    "postcss": "8.2.4",
+    "postcss": "8.2.13",
     "postcss-import": "14.0.0",
     "postcss-loader": "4.2.0",
     "prettier": "^2.0.0",

packages/angular_devkit/build_angular/package.json

@@ -32,7 +32,7 @@
     "core-js": "3.8.3",
     "critters": "0.0.7",
     "css-loader": "5.0.1",
-    "cssnano": "4.1.11",
+    "cssnano": "5.0.1",
     "file-loader": "6.2.0",
     "find-cache-dir": "3.3.1",
     "glob": "7.1.6",
@@ -50,7 +50,7 @@
     "ora": "5.3.0",
     "parse5-html-rewriting-stream": "6.0.1",
     "pnp-webpack-plugin": "1.6.4",
-    "postcss": "8.2.4",
+    "postcss": "8.2.13",
     "postcss-import": "14.0.0",
     "postcss-loader": "4.2.0",
     "raw-loader": "4.0.2",

packages/angular_devkit/build_angular/src/webpack/plugins/optimize-css-webpack-plugin.ts

@@ -111,11 +111,11 @@ export class OptimizeCssWebpackPlugin {
           };
 
           const output = await new Promise<Result>((resolve, reject) => {
-            // the last parameter is not in the typings
+            // @types/cssnano are not up to date with version 5.
             // tslint:disable-next-line: no-any
-            (cssNano.process as any)(content, postCssOptions, cssNanoOptions)
+            (cssNano as any)(cssNanoOptions).process(content, postCssOptions)
               .then(resolve)
-              .catch((err: Error) => reject(new Error(`${file} ${err.message}`)));
+              .catch((err: Error) => reject(err));
           });
 
           for (const { text } of output.warnings()) {