Bump graphql-shield from 7.2.2 to 7.6.4 in /backend

Created by: dependabot[bot]

Bumps graphql-shield from 7.2.2 to 7.6.4.

Release notes

Sourced from graphql-shield's releases.

graphql-shield@7.6.1

Patch Changes

• 0da0a61: fix corrupted release

graphql-shield@7.6.0

Minor Changes

• 32b91fe: Bump Package Dependencies

Commits

• bddd7b2 Upcoming Release Changes (refs/heads/master) (#1475)
• ddf293e fix(deps): add missing tslib dependency (#1470)
• 19fe3d8 Implement Giscus (#1472)
• a798efa chore(ci): remove algolia integrity check, stop trying to commit lockfile on ...
• 126489e fix(ci): algolia workflows (#1468)
• ca7d4be Upcoming Release Changes (refs/heads/master) (#1462)
• 249e0e1 chore(website): algolia workflows (#1466)
• 5cd6b8e update website to use latest guild components (#1467)
• 01ed0bb remove unmaintained note (#1463)
• 28759e4 Website: GraphQL Shield (#1454)
• Additional commits viewable in compare view

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