chore(deps): pin dependency @apollo/gateway to 0.38.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
@apollo/gateway	devDependencies	pin	^0.38.0 -> 0.38.0

📌 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 1157147905

• 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 75.943%

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Totals
Change from base Build 1157145724:	0.0%
Covered Lines:	94
Relevant Lines:	103

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💛 - Coveralls