Bump postcss from 8.4.4 to 8.4.5 in /build/javascript (#1589)

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.4 to 8.4.5.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/8.4.4...8.4.5)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build/javascript/package-lock.json

@@ -20,7 +20,7 @@
       },
       "devDependencies": {
         "cssnano": "^5.0.12",
-        "postcss": "^8.4.4",
+        "postcss": "^8.4.5",
         "postcss-cli": "^9.1.0"
       }
     },
@@ -1562,9 +1562,9 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.4.4",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.4.tgz",
-      "integrity": "sha512-joU6fBsN6EIer28Lj6GDFoC/5yOZzLCfn0zHAn/MYXI7aPt4m4hK5KC5ovEZXy+lnCjmYIbQWngvju2ddyEr8Q==",
+      "version": "8.4.5",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz",
+      "integrity": "sha512-jBDboWM8qpaqwkMwItqTQTiFikhs/67OYVvblFFTM7MrZjt6yMKd6r2kgXizEbTTljacm4NldIlZnhbjr84QYg==",
       "dev": true,
       "dependencies": {
         "nanoid": "^3.1.30",
@@ -4305,9 +4305,9 @@
       }
     },
     "postcss": {
-      "version": "8.4.4",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.4.tgz",
-      "integrity": "sha512-joU6fBsN6EIer28Lj6GDFoC/5yOZzLCfn0zHAn/MYXI7aPt4m4hK5KC5ovEZXy+lnCjmYIbQWngvju2ddyEr8Q==",
+      "version": "8.4.5",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz",
+      "integrity": "sha512-jBDboWM8qpaqwkMwItqTQTiFikhs/67OYVvblFFTM7MrZjt6yMKd6r2kgXizEbTTljacm4NldIlZnhbjr84QYg==",
       "dev": true,
       "requires": {
         "nanoid": "^3.1.30",

build/javascript/package.json

@@ -15,7 +15,7 @@
   },
   "devDependencies": {
     "cssnano": "^5.0.12",
-    "postcss": "^8.4.4",
+    "postcss": "^8.4.5",
     "postcss-cli": "^9.1.0"
   },
   "snowpack": {