fix(deps): update ghcr.io/socialgouv/docker/nginx docker tag to v7.6.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/socialgouv/docker/nginx	final	minor	7.3.0 -> 7.6.1

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Release Notes

SocialGouv/docker (ghcr.io/socialgouv/docker/nginx)

v7.6.1

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Bug Fixes

• bats: upgrade deps (#​1007) (4ec4d17)
• nginx4spa: use upstream nginx image (#​1006) (4949939)

v7.6.0

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Features

• add cnpg-pgvector (#​1004) (a0b40d7)

v7.5.2

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Bug Fixes

• deps: update nginxinc/nginx-unprivileged:1.23-alpine docker digest to ae94ea4 (#​1001) (a304e99)

v7.5.1

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Bug Fixes

• deps: update github/codeql-action digest to 9a866ed (#​978) (c635555)

v7.5.0

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Features

• deps: update debian docker tag to v11.6 (#​981) (0631f73)

v7.4.0

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Features

• deps: update hasura/graphql-engine docker tag to v2.23.0 (#​991) (eb809f2)

v7.3.1

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Bug Fixes

• try upgrade (#​992) (b03a3b9)
• update deps (#​993) (1823f05)

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