Update dependency postcss-merge-rules to v6.0.4

Author: renovate[bot]

package.json

@@ -54,7 +54,7 @@
 		"postcss-easy-import": "4.0.0",
 		"postcss-flexbugs-fixes": "5.0.2",
 		"postcss-loader": "8.1.0",
-		"postcss-merge-rules": "6.0.3",
+		"postcss-merge-rules": "6.0.4",
 		"postcss-normalize": "10.0.1",
 		"postcss-url": "10.1.3",
 		"postcss-utilities": "0.8.4",

yarn.lock

@@ -832,7 +832,7 @@ browser-sync@3.0.2:
     ua-parser-js "^1.0.33"
     yargs "^17.3.1"
 
-browserslist@4.23.0:
+browserslist@4.23.0, browserslist@^4.23.0:
   version "4.23.0"
   resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.23.0.tgz#8f3acc2bbe73af7213399430890f86c63a5674ab"
   integrity sha512-QW8HiM1shhT2GuzkvklfjcKDiWFXHOeFCIA/huJPwHsslwcydgk7X+z2zXpEijP98UCY7HbubZt5J2Zgvf0CaQ==
@@ -4435,7 +4435,17 @@ postcss-merge-longhand@^6.0.2:
     postcss-value-parser "^4.2.0"
     stylehacks "^6.0.2"
 
-postcss-merge-rules@6.0.3, postcss-merge-rules@^6.0.3:
+postcss-merge-rules@6.0.4:
+  version "6.0.4"
+  resolved "https://registry.yarnpkg.com/postcss-merge-rules/-/postcss-merge-rules-6.0.4.tgz#a4ac3ed63502428d846f8b71b2c880dba58c78f1"
+  integrity sha512-97iF3UJ5v8N1BWy38y+0l+Z8o5/9uGlEgtWic2PJPzoRrLB6Gxg8TVG93O0EK52jcLeMsywre26AUlX1YAYeHA==
+  dependencies:
+    browserslist "^4.23.0"
+    caniuse-api "^3.0.0"
+    cssnano-utils "^4.0.1"
+    postcss-selector-parser "^6.0.15"
+
+postcss-merge-rules@^6.0.3:
   version "6.0.3"
   resolved "https://registry.yarnpkg.com/postcss-merge-rules/-/postcss-merge-rules-6.0.3.tgz#08fcf714faaad75b1980ecd961b080ae2f8ddeb3"
   integrity sha512-yfkDqSHGohy8sGYIJwBmIGDv4K4/WrJPX355XrxQb/CSsT4Kc/RxDi6akqn5s9bap85AWgv21ArcUWwWdGNSHA==