NPM: Bump prettier-plugin-solidity from 1.0.0-beta.8 to 1.0.0-beta.19 (#13)

Bumps [prettier-plugin-solidity](https://github.com/prettier-solidity/prettier-plugin-solidity) from 1.0.0-beta.8 to 1.0.0-beta.19.
- [Release notes](https://github.com/prettier-solidity/prettier-plugin-solidity/releases)
- [Commits](prettier-solidity/prettier-plugin-solidity@v1.0.0-beta.8...v1.0.0-beta.19)

---
updated-dependencies:
- dependency-name: prettier-plugin-solidity
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

package-lock.json

@@ -24,7 +24,7 @@
     "hardhat-gas-reporter": "^1.0.4",
     "mocha": "^8.3.2",
     "prettier": "^2.2.1",
-    "prettier-plugin-solidity": "^1.0.0-beta.8",
+    "prettier-plugin-solidity": "^1.0.0-beta.19",
     "solidity-coverage": "^0.7.16"
   }
 }