build: Update sass to v1.77.6

We won't upgrade further than v1.77.6 until carbon fixes their mixed
declarations to match CSS rules.

Refs: carbon-design-system/carbon#16962

package.json

@@ -59,7 +59,7 @@
     "react-redux": "^9.1.2",
     "reflect-metadata": "^0.2.2",
     "remeda": "^2.11.0",
-    "sass": "^1.77.2",
+    "sass": "1.77.6",
     "smol-toml": "^1.3.0",
     "temporal-polyfill": "^0.2.5",
     "ts-node": "^10.9.2",

yarn.lock

@@ -5905,7 +5905,7 @@ __metadata:
     react-redux: "npm:^9.1.2"
     reflect-metadata: "npm:^0.2.2"
     remeda: "npm:^2.11.0"
-    sass: "npm:^1.77.2"
+    sass: "npm:1.77.6"
     smol-toml: "npm:^1.3.0"
     temporal-polyfill: "npm:^0.2.5"
     ts-node: "npm:^10.9.2"
@@ -7301,16 +7301,16 @@ __metadata:
   languageName: node
   linkType: hard
 
-"sass@npm:^1.77.2":
-  version: 1.77.2
-  resolution: "sass@npm:1.77.2"
+"sass@npm:1.77.6":
+  version: 1.77.6
+  resolution: "sass@npm:1.77.6"
   dependencies:
     chokidar: "npm:>=3.0.0 <4.0.0"
     immutable: "npm:^4.0.0"
     source-map-js: "npm:>=0.6.2 <2.0.0"
   bin:
     sass: sass.js
-  checksum: 10c0/0d292339064de3c902e209d41de9c4eb2038cff326476aeebbb5be3eee1d23400d975face2b8e124ae617b10af3e93bec01580f61912f34e4c517fe137a118b6
+  checksum: 10c0/fe5a393c0aa29eda9f83c06be9b94788b61fe8bad0616ee6e3a25d21ab504f430d40c0064fdca89b02b8e426411ae6dcd906c91f2e48c263575c3d392b6daeb1
   languageName: node
   linkType: hard