chore(deps): update traefik docker tag to v3.7.15

[tribble-trouble]

This PR contains the following updates:

Package	Update	Change
traefik (source)	patch	v3.7.14 → v3.7.15

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Release Notes

traefik/traefik (traefik)

v3.7.15

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Bug fixes:

• [server] Reject CONNECT requests regardless of HTTP version (#​14031 @​juliens)
• [server] Reject CONNECT method before reaching the muxer (#​14050 @​juliens)
• [k8s/crd] Allow observability metadata on child routers (#​14018 @​bunnysayzz)
• [k8s/gatewayapi] Bump sigs.k8s.io/gateway-api to v1.6.3 (#​14017 @​rtribotte)
• [k8s/gatewayapi] Default HTTPRoute backend scheme to HTTP when no appProtocol (#​13935 @​Tyagiquamar)
• [k8s/ingress-nginx] Apply auth-tls client authentication to the whole host (#​14057 @​juliens)
• [k8s/ingress-nginx] Fix cross-namespace check on shared auth-tls-secret TLS options (#​14066 @​juliens)
• [fastproxy] Add a non-regression test for CR/LF in FastProxy request headers (#​13642 @​mturac)
• [fastproxy] Fix concurrent buffer reads on upgraded connections (#​14023 @​juliens)
• Bump golang.org/x/net to v0.60.0 (#​14048 @​kevinpollet)

Documentation:

• [security] Fix typo in the Request Path page (#​14036 @​SethFalco)
• [k8s/crd] Fix broken Kubernetes CRD definitions links in CRD reference pages (#​14047 @​SatvikMishra08)
• [k8s] Document the safeNaming impact on cross-provider references (#​13768 @​lazerg)
• [k8s/gatewayapi] Fix broken links in the Gateway API routing page (#​14072 @​Neffi42)
• Fix broken anchor links to Restrict the Scope of Service Discovery (#​14056 @​SatvikMishra08)
• Add the documentation style guide to the Contributing section (#​14061 @​rachana5)
• Remove redundant period in README (#​14068 @​mxmrnn)

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