ci: update dev image to deis/docker-go-dev v1.29.0

[jackfrancis]

Reason for Change:

This PR updates the standard dev container image to deis/go-docker-dev v1.29.0

See: https://github.com/deis/docker-go-dev/releases/tag/v1.29.0

Issue Fixed:

Credit Where Due:

Does this change contain code from or inspired by another project?

• No
• Yes

If "Yes," did you notify that project's maintainers and provide attribution?

• No
• Yes

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Notes:

[acs-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jackfrancis

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Needs approval from an approver in each of these files:

• OWNERS [jackfrancis]

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[codecov]

Codecov Report

Merging #4195 (a052441) into master (a18eeb4) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #4195   +/-   ##
=======================================
  Coverage   73.42%   73.42%           
=======================================
  Files         135      135           
  Lines       20849    20849           
=======================================
  Hits        15308    15308           
  Misses       4566     4566           
  Partials      975      975           

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[jackfrancis]

/azp run pr-e2e

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).