Account for --exit-zero-on-changes=true

[codykaup]

Closes #973

If you pass something to --exit-zero-on-changes, the CLI assumes you're providing a branch name. However, if you pass --exit-zero-on-changes=true, it assumes true is the branch and essentially breaks the flag (unless your branch is literally true).

To account for this, we can simply check if the --exit-zero-on-changes contains the string 'true' when we set the exit code on the snapshot step.

📦 Published PR as canary version: 11.11.1--canary.1083.11219791549.0

✨ Test out this PR locally via:

npm install [email protected]
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[github-actions]

📦 Package Size: 5268 KB
✅ Compared to main: 0 KB bd798a1 (5268 KB)

[codacy-production]

Coverage summary from Codacy

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Coverage variation	Diff coverage
✅ +0.01% (target: -1.00%)	✅ 100.00% (target: 80.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (bd798a1)	8606	4647	54.00%
Head commit (07459cc)	8607 (+1)	4648 (+1)	54.00% (+0.01%)

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Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#1083)	1	1	100.00%

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