fix: bump get-tag action to v2.1.4 to resolve set-output deprecation

[kurtdoherty]

Previous Prerelease workflows show deprecation warnings for the set-output command. The latest Prerelease build shows failure on the Package Version bump step because no version number has been provided to the yarn version command. The version number is meant to be passed in through the ${{ steps.tagName.outputs.version }} substitution, but it apparently isn't.

The olegtarasov/get-tag action being relied upon is up to 2.1.4, with that version specifically calling out it resolves the deprecation warnings.

[rpt-uk-github]

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[codacy-production]

Coverage summary from Codacy

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Coverage variation	Diff coverage
Report missing for 9c0c6141	✅ ∅

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (9c0c614)	Report Missing	Report Missing	Report Missing
Head commit (6cbad48)	9325	8631	92.56%

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#794)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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