Update dependency postcss to v8.4.34 (#81962)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

package.json

@@ -187,7 +187,7 @@
     "mutationobserver-shim": "0.3.7",
     "ngtemplate-loader": "2.1.0",
     "node-notifier": "10.0.1",
-    "postcss": "8.4.33",
+    "postcss": "8.4.34",
     "postcss-loader": "7.3.4",
     "postcss-reporter": "7.1.0",
     "postcss-scss": "4.0.9",

yarn.lock

@@ -17939,7 +17939,7 @@ __metadata:
     ol-ext: "npm:4.0.14"
     papaparse: "npm:5.4.1"
     pluralize: "npm:^8.0.0"
-    postcss: "npm:8.4.33"
+    postcss: "npm:8.4.34"
     postcss-loader: "npm:7.3.4"
     postcss-reporter: "npm:7.1.0"
     postcss-scss: "npm:4.0.9"
@@ -24481,14 +24481,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"postcss@npm:8.4.33, postcss@npm:^8.4.28, postcss@npm:^8.4.33":
-  version: 8.4.33
-  resolution: "postcss@npm:8.4.33"
+"postcss@npm:8.4.34, postcss@npm:^8.4.28, postcss@npm:^8.4.33":
+  version: 8.4.34
+  resolution: "postcss@npm:8.4.34"
   dependencies:
     nanoid: "npm:^3.3.7"
     picocolors: "npm:^1.0.0"
     source-map-js: "npm:^1.0.2"
-  checksum: 10/e22a4594c255f26117f38419fb494d7ecab0f596cd409f7aadc8a6173abf180ed7ea970cd13fd366ab12b5840be901d2a09b25197700c2ebcb5a8077326bf519
+  checksum: 10/ff4769ff6910f688b0672e0a8f83d1d0a9fee3f61aa33b61b6ade0d5dc2ef53ce1a80d78e2eab03f2d40a15e04bc028682857a4f15d31501d63c80473dee2981
   languageName: node
   linkType: hard