chore: revert css-loader 7 to 6 (#55)

Author: hacke2

package.json

@@ -44,7 +44,7 @@
     "conventional-changelog-cli": "^5.0.0",
     "copy-webpack-plugin": "^12.0.2",
     "cross-env": "^7.0.3",
-    "css-loader": "7",
+    "css-loader": "^6",
     "debug": "^4.3.7",
     "electron": "30.1.2",
     "extract-zip": "^2.0.1",

yarn.lock

@@ -3721,7 +3721,7 @@ __metadata:
     conventional-changelog-cli: "npm:^5.0.0"
     copy-webpack-plugin: "npm:^12.0.2"
     cross-env: "npm:^7.0.3"
-    css-loader: "npm:7"
+    css-loader: "npm:^6"
     debug: "npm:^4.3.7"
     electron: "npm:30.1.2"
     electron-updater: "npm:6.3.9"
@@ -4539,9 +4539,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"css-loader@npm:7":
-  version: 7.1.2
-  resolution: "css-loader@npm:7.1.2"
+"css-loader@npm:^6":
+  version: 6.11.0
+  resolution: "css-loader@npm:6.11.0"
   dependencies:
     icss-utils: "npm:^5.1.0"
     postcss: "npm:^8.4.33"
@@ -4553,13 +4553,13 @@ __metadata:
     semver: "npm:^7.5.4"
   peerDependencies:
     "@rspack/core": 0.x || 1.x
-    webpack: ^5.27.0
+    webpack: ^5.0.0
   peerDependenciesMeta:
     "@rspack/core":
       optional: true
     webpack:
       optional: true
-  checksum: 10/ddde22fb103888320f60a1414a6a04638d2e9760a532a52d03c45e6e2830b32dd76c734aeef426f78dd95b2d15f77eeec3854ac53061aff02569732dc6e6801c
+  checksum: 10/9e3665509f6786d46683de5c5f5c4bdd4aa62396b4017b41dbbb41ea5ada4012c80ee1e3302b79b504bc24da7fa69e3552d99006cecc953e0d9eef4a3053b929
   languageName: node
   linkType: hard