Update dependency cross-env to v7 (#306)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [cross-env](https://togithub.com/kentcdodds/cross-env) | [`6.0.3` -> `7.0.3`](https://renovatebot.com/diffs/npm/cross-env/6.0.3/7.0.3) | [![age](https://developer.mend.io/api/mc/badges/age/npm/cross-env/7.0.3?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/cross-env/7.0.3?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/cross-env/6.0.3/7.0.3?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/cross-env/6.0.3/7.0.3?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>kentcdodds/cross-env (cross-env)</summary>

### [`v7.0.3`](https://togithub.com/kentcdodds/cross-env/releases/tag/v7.0.3)

[Compare Source](https://togithub.com/kentcdodds/cross-env/compare/v7.0.2...v7.0.3)

##### Bug Fixes

-   add maintenance mode notice ([fe80c84](https://togithub.com/kentcdodds/cross-env/commit/fe80c849bba0dc3c4f5930c45e70a34952aa961f))

### [`v7.0.2`](https://togithub.com/kentcdodds/cross-env/releases/tag/v7.0.2)

[Compare Source](https://togithub.com/kentcdodds/cross-env/compare/v7.0.1...v7.0.2)

##### Reverts

-   Revert "fix: signal handling ([#&#8203;227](https://togithub.com/kentcdodds/cross-env/issues/227))" ([2a1f44c](https://togithub.com/kentcdodds/cross-env/commit/2a1f44c9053702fdc3fffca38afc041cbf634a05)), closes [#&#8203;227](https://togithub.com/kentcdodds/cross-env/issues/227)

### [`v7.0.1`](https://togithub.com/kentcdodds/cross-env/releases/tag/v7.0.1)

[Compare Source](https://togithub.com/kentcdodds/cross-env/compare/v7.0.0...v7.0.1)

##### Bug Fixes

-   signal handling ([#&#8203;227](https://togithub.com/kentcdodds/cross-env/issues/227)) ([8a9cf0e](https://togithub.com/kentcdodds/cross-env/commit/8a9cf0e4de5dba2c990ff9bee77bf65cb3fc2c8d))

### [`v7.0.0`](https://togithub.com/kentcdodds/cross-env/releases/tag/v7.0.0)

[Compare Source](https://togithub.com/kentcdodds/cross-env/compare/v6.0.3...v7.0.0)

##### Features

-   update dependencies ([#&#8203;223](https://togithub.com/kentcdodds/cross-env/issues/223)) ([4ec6f40](https://togithub.com/kentcdodds/cross-env/commit/4ec6f4009d05c571d1737306cb787499d511048b))

##### BREAKING CHANGES

-   Drop Node 8 support

</details>

---

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package.json

@@ -121,7 +121,7 @@
     "coveralls": "3.1.1",
     "create-next-app": "workspace:*",
     "critters": "0.0.20",
-    "cross-env": "6.0.3",
+    "cross-env": "7.0.3",
     "cross-spawn": "6.0.5",
     "dd-trace": "4.16.0",
     "es5-ext": "0.10.62",

packages/next-swc/package.json

@@ -32,6 +32,6 @@
   },
   "devDependencies": {
     "@napi-rs/cli": "2.16.3",
-    "cross-env": "6.0.3"
+    "cross-env": "7.0.3"
   }
 }