Bump shell-quote from 1.8.1 to 1.8.4 in /extensions/copilot (#320602)

Bumps [shell-quote](https://github.com/ljharb/shell-quote) from 1.8.1 to 1.8.4.
- [Changelog](https://github.com/ljharb/shell-quote/blob/main/CHANGELOG.md)
- [Commits](https://github.com/ljharb/shell-quote/compare/v1.8.1...v1.8.4)

---
updated-dependencies:
- dependency-name: shell-quote
  dependency-version: 1.8.4
  dependency-type: indirect
...

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

extensions/copilot/package-lock.json

@@ -2991,9 +2991,6 @@
       "cpu": [
         "arm64"
       ],
-      "libc": [
-        "glibc"
-      ],
       "license": "SEE LICENSE IN LICENSE.md",
       "optional": true,
       "os": [
@@ -3010,9 +3007,6 @@
       "cpu": [
         "x64"
       ],
-      "libc": [
-        "glibc"
-      ],
       "license": "SEE LICENSE IN LICENSE.md",
       "optional": true,
       "os": [
@@ -3029,9 +3023,6 @@
       "cpu": [
         "arm64"
       ],
-      "libc": [
-        "musl"
-      ],
       "license": "SEE LICENSE IN LICENSE.md",
       "optional": true,
       "os": [
@@ -3048,9 +3039,6 @@
       "cpu": [
         "x64"
       ],
-      "libc": [
-        "musl"
-      ],
       "license": "SEE LICENSE IN LICENSE.md",
       "optional": true,
       "os": [
@@ -16236,10 +16224,14 @@
       }
     },
     "node_modules/shell-quote": {
-      "version": "1.8.1",
-      "resolved": "https://registry.npmjs.org/shell-quote/-/shell-quote-1.8.1.tgz",
-      "integrity": "sha512-6j1W9l1iAs/4xYBI1SYOVZyFcCis9b4KCLQ8fgAGG07QvzaRLVVRQvAy85yNmmZSjYjg4MWh4gNvlPujU/5LpA==",
+      "version": "1.8.4",
+      "resolved": "https://registry.npmjs.org/shell-quote/-/shell-quote-1.8.4.tgz",
+      "integrity": "sha512-VsC6n6vz1ihYYyZZwX7YZSF5l5x36ca17OC+a69h94YqB7X6XLwf+5MOgynYir2SLFUbl8gIYvBo8K8RoNQ6bQ==",
       "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.4"
+      },
       "funding": {
         "url": "https://github.com/sponsors/ljharb"
       }