Fix bug in graph auth

[azf20]

before:

    Error: Error storing deploy key: Invalid URL

after:

Deploy key set for https://api.studio.thegraph.com/deploy/

[changeset-bot]

🦋 Changeset detected

Latest commit: 2840dcf

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@graphprotocol/graph-cli	Patch

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[cloudflare-workers-and-pages]

Deploying graph-tooling with    Cloudflare Pages

Latest commit:	2840dcf
Status:	✅  Deploy successful!
Preview URL:	https://89cb17dd.graph-tooling.pages.dev
Branch Preview URL:	https://azf20-fix-auth.graph-tooling.pages.dev

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[github-actions]

🚀 Snapshot Release (alpha)

The latest changes of this PR are available as alpha on npm (based on the declared changesets):

Package	Version	Info
@graphprotocol/graph-cli	0.74.1-alpha-20240613085730-2840dcf	npm ↗︎ unpkg ↗︎