build: replace current create release pr with re-usable workflow

[StephenHulme]

Changes proposed in this pull request

• Replace current Create Release PR with re-usable workflow from Add a Create Release PR workflow .github#15 as in Sequencescape

Instructions for Reviewers

[All PRs] - Confirm PR template filled
[Feature Branches] - Review code
[Production Merges to main]
    - Check story numbers included
    - Check for debug code
    - Check version

[StephenHulme]

To be merged in after #2049 to prevent any disruption to releases

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.98%. Comparing base (0402678) to head (d154de4).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #2060   +/-   ##
========================================
  Coverage    77.98%   77.98%           
========================================
  Files          471      471           
  Lines        17975    17975           
  Branches       262      262           
========================================
  Hits         14018    14018           
  Misses        3955     3955           
  Partials         2        2           

Flag	Coverage Δ
javascript	69.89% <ø> (ø)
pull_request	77.98% <ø> (ø)
push	77.98% <ø> (ø)
ruby	91.16% <ø> (ø)

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