Update Github workflow files to use the latest versions of Github actions

[alexmerlin]

https://github.com/dotkernel/admin/actions/runs/4243411507

While running Github actions, the following warnings are thrown:

Node.js 12 actions are deprecated. Please update the following actions to use Node.js 16: actions/checkout@v2.3.4, actions/cache@v2. For more information see: https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/.

The save-state command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The set-output command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

[alexmerlin]

Fixed in #162