feat(gatsby): Upgrade Sentry Webpack Plugin to 1.18.8 (#4636)

https://github.com/getsentry/sentry-webpack-plugin/releases/tag/v1.18.8

packages/gatsby/package.json

@@ -28,7 +28,7 @@
   "dependencies": {
     "@sentry/react": "6.18.0",
     "@sentry/tracing": "6.18.0",
-    "@sentry/webpack-plugin": "1.18.5"
+    "@sentry/webpack-plugin": "1.18.8"
   },
   "peerDependencies": {
     "gatsby": "^2.0.0 || ^3.0.0 || ^4.0.0",

yarn.lock

@@ -3150,13 +3150,32 @@
     progress "^2.0.3"
     proxy-from-env "^1.1.0"
 
+"@sentry/cli@^1.73.0":
+  version "1.73.0"
+  resolved "https://registry.yarnpkg.com/@sentry/cli/-/cli-1.73.0.tgz#0d0bce913e0060ae192741c6693c57e50078c886"
+  integrity sha512-n4YINqmoncGUkLEpd4WuW+oD+aoUyQPhRbSBSYkbCFxPPmopn1VExCB2Vvzwj7vjXYRRGkix6keBMS0LLs3A3Q==
+  dependencies:
+    https-proxy-agent "^5.0.0"
+    mkdirp "^0.5.5"
+    node-fetch "^2.6.7"
+    npmlog "^4.1.2"
+    progress "^2.0.3"
+    proxy-from-env "^1.1.0"
+
 "@sentry/webpack-plugin@1.18.5":
   version "1.18.5"
   resolved "https://registry.yarnpkg.com/@sentry/webpack-plugin/-/webpack-plugin-1.18.5.tgz#aaff79d8e05b8d803654490324252406c976b1cd"
   integrity sha512-HycNZEcVRj/LxaG6hLsxjHo47mpxop3j7u2aUkriE2pT7XNpeypsa0WiokYzStxzCfSu8rbAbX4PchTGLMlTjw==
   dependencies:
     "@sentry/cli" "^1.72.0"
 
+"@sentry/webpack-plugin@1.18.8":
+  version "1.18.8"
+  resolved "https://registry.yarnpkg.com/@sentry/webpack-plugin/-/webpack-plugin-1.18.8.tgz#247a73a0aa9e28099a736bbe89ca0d35cbac7636"
+  integrity sha512-PtKr0NL62b5L3kPFGjwSNbIUwwcW5E5G6bQxAYZGpkgL1MFPnS4ND0SAsySuX0byQJRFFium5A19LpzyvQZSlQ==
+  dependencies:
+    "@sentry/cli" "^1.73.0"
+
 "@simple-dom/interface@^1.4.0":
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/@simple-dom/interface/-/interface-1.4.0.tgz#e8feea579232017f89b0138e2726facda6fbb71f"