Bump truffle from 5.1.18 to 5.1.19 in /workspace-blockchain

Bumps [truffle](https://github.com/trufflesuite/truffle) from 5.1.18 to 5.1.19.
- [Release notes](https://github.com/trufflesuite/truffle/releases)
- [Commits](https://github.com/trufflesuite/truffle/compare/[email protected]@5.1.19)

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

Author: dependabot-preview[bot]

workspace-blockchain/package.json

@@ -42,7 +42,7 @@
     },
     "devDependencies": {
         "@openzeppelin/cli": "2.8.0",
-        "truffle": "5.1.18",
+        "truffle": "5.1.19",
         "@codechecks/client": "0.1.10",
         "@truffle/hdwallet-provider": "1.0.33",
         "@types/bignumber.js": "5.0.0",

workspace-blockchain/yarn.lock

@@ -8147,10 +8147,10 @@ [email protected]:
     "@types/mocha" "^5.2.5"
     "@types/web3" "^1.0.18"
 
-[email protected].18:
-  version "5.1.18"
-  resolved "https://registry.yarnpkg.com/truffle/-/truffle-5.1.18.tgz#2fefaed849698b7fb865b417a197d1b6d9229db3"
-  integrity sha512-9oxmLmyTXML5Auxl8adPd3kLcOZVhYNapCmPUcMnYCOXthxa3NEOW9y3PTcoDnwFyuIOETGIiJp4Ew9bmY8v6Q==
+[email protected].19:
+  version "5.1.19"
+  resolved "https://registry.yarnpkg.com/truffle/-/truffle-5.1.19.tgz#daf0aca071b9e2cdd88f456f10c1a81e840794aa"
+  integrity sha512-H4S7GbKCN56eW5ftLo+l160c+SLyF8C205hUF9VRfulxFBdXvmTIeHdRO/zcnBWiKfEbXzuHWSI9gyFkPtkvmw==
   dependencies:
     app-module-path "^2.2.0"
     mocha "5.2.0"