* DevEnv: updates pixelmatch 4.0.2 -> 5.1.0

* DevEnv: updates pixelmatch 5.0.2 -> 5.1.0 in grafana-toolkit package

* DevEnv: updates postcss-flexbugs-fixes 4.1.0 -> 4.2.0 in grafana-toolkit package

* DevEnv: updates postcss-preset-env 6.6.0 -> 6.7.0 in grafana-toolkit package

* DevEnv: updates less 3.10.3 -> 3.11.1 in grafana-toolkit package

* DevEnv: updates ora 3.4.0 -> 4.0.3 in grafana-toolkit package

* DevEnv: updates semver 6.1.1 -> 7.1.3 in grafana-toolkit package

* DevEnv: updates simple-git 1.112.0 -> 1.132.0 in grafana-toolkit package

* DevEnv: updates ora import to commonjs after its update