Upgrade Golang to 1.19; Upgrade container base images

[szh]

Desired Outcome

Resolve dependency vulnerabilities reported by Snyk.

Implemented Changes

• Updated Golang version to 1.19
  • This includes updating command syntax from go get to go install
• Update outdated container base images

Connected Issue/Story

CyberArk internal issue ID: CONJSE-1669

Definition of Done

• Snyk reports fewer issues in this repository

Changelog

• The CHANGELOG has been updated, or
• This PR does not include user-facing changes and doesn't require a
  CHANGELOG update

Test coverage

• This PR includes new unit and integration tests to go with the code
  changes, or
• The changes in this PR do not require tests

Documentation

• Docs (e.g. READMEs) were updated in this PR
• A follow-up issue to update official docs has been filed here: [insert issue ID]
• This PR does not require updating any documentation

Behavior

• This PR changes product behavior and has been reviewed by a PO, or
• These changes are part of a larger initiative that will be reviewed later, or
• No behavior was changed with this PR

Security

• Security architect has reviewed the changes in this PR,
• These changes are part of a larger initiative with a separate security review, or
• There are no security aspects to these changes

[szh]

Waiting on #1490 to be merged since that will take care of some of the issues

[codeclimate]

Lists should be surrounded by blank lines

[codeclimate]

Code Climate has analyzed commit e619726 and detected 1 issue on this pull request.

Here's the issue category breakdown:

Category	Count
Style	1

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 70.7% (0.0% change).

View more on Code Climate.

[andytinkham]

LGTM - thanks, @szh!