chore: bump go version to 1.19

[patrickjahns]

Why is this PR required? What issue does it fix?:

As per https://github.com/openebs/lvm-localpv/pull/212#issuecomment-1323062790 tere was a request to bump the golang version

What this PR does?:

Bump the golang version to 1.19

Does this PR require any upgrade changes?:

No that I am aware of

Checklist:

• [ ] Fixes #
• [ ] PR Title follows the convention of <type>(<scope>): <subject>
• [ ] Has the change log section been updated?
• [ ] Commit has unit tests
• [ ] Commit has integration tests
• [ ] (Optional) Are upgrade changes included in this PR? If not, mention the issue/PR to track:
• [ ] (Optional) If documentation changes are required, which issue on https://github.com/openebs/openebs-docs is used to track them:

[patrickjahns]

@kmova - can you take a look on this PR so we can also move forward with #212

[niladrih]

Closing this PR. These changes have been included in the following PRs:

• https://github.com/openebs/lvm-localpv/pull/232
• https://github.com/openebs/lvm-localpv/pull/243