fix(deps): pin dependency graphql-subscriptions to 1.2.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
graphql-subscriptions	dependencies	pin	^1.2.1 -> 1.2.1

📌 Important: Renovate will wait until you have merged this Pin PR before creating any upgrade PRs for the affected packages. Add the preset :preserveSemverRanges to your config if you instead don't wish to pin dependencies.

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[coveralls]

Pull Request Test Coverage Report for Build 55c1bb98-7a4e-47f9-9a09-0483373ccacc

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 94.321%

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Totals
Change from base Build 62ce8275-8583-4d9a-bcf4-3ab7a0bc8945:	0.0%
Covered Lines:	5547
Relevant Lines:	5881

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💛 - Coveralls