Update dependency webpack-stream to v6 (firebase#3696)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

integration/firestore/package.json

@@ -29,6 +29,6 @@
     "ts-loader": "8.0.4",
     "typescript": "4.0.2",
     "webpack": "4.44.2",
-    "webpack-stream": "5.2.1"
+    "webpack-stream": "6.1.0"
   }
 }

yarn.lock

@@ -14227,7 +14227,7 @@ supports-color@^2.0.0:
   resolved "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz#535d045ce6b6363fa40117084629995e9df324c7"
   integrity sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=
 
-supports-color@^5.0.0, supports-color@^5.3.0, supports-color@^5.5.0:
+supports-color@^5.0.0, supports-color@^5.3.0:
   version "5.5.0"
   resolved "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz#e2e69a44ac8772f78a1ec0b35b689df6530efc8f"
   integrity sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==
@@ -14241,7 +14241,7 @@ supports-color@^6.1.0:
   dependencies:
     has-flag "^3.0.0"
 
-supports-color@^7.0.0, supports-color@^7.1.0:
+supports-color@^7.0.0, supports-color@^7.1.0, supports-color@^7.2.0:
   version "7.2.0"
   resolved "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz#1b7dcdcb32b8138801b3e478ba6a51caa89648da"
   integrity sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==
@@ -15511,17 +15511,17 @@ webpack-sources@^1.4.0, webpack-sources@^1.4.1:
     source-list-map "^2.0.0"
     source-map "~0.6.1"
 
-webpack-stream@5.2.1:
-  version "5.2.1"
-  resolved "https://registry.npmjs.org/webpack-stream/-/webpack-stream-5.2.1.tgz#35c992161399fe8cad9c10d4a5c258f022629b39"
-  integrity sha512-WvyVU0K1/VB1NZ7JfsaemVdG0PXAQUqbjUNW4A58th4pULvKMQxG+y33HXTL02JvD56ko2Cub+E2NyPwrLBT/A==
+webpack-stream@6.1.0:
+  version "6.1.0"
+  resolved "https://registry.npmjs.org/webpack-stream/-/webpack-stream-6.1.0.tgz#047348e36793432f329c7b5ff13e6e9b6872c152"
+  integrity sha512-kFMnDzFTzyvVmn4ajaj0xEJavvYizd3I/KmQ6C5aUstcAkNwZUidxkk/uEaEPSydaAn66v8ZcP1+bhKSshNJUQ==
   dependencies:
     fancy-log "^1.3.3"
     lodash.clone "^4.3.2"
     lodash.some "^4.2.2"
-    memory-fs "^0.4.1"
+    memory-fs "^0.5.0"
     plugin-error "^1.0.1"
-    supports-color "^5.5.0"
+    supports-color "^7.2.0"
     through "^2.3.8"
     vinyl "^2.1.0"
     webpack "^4.26.1"