chore(container): update image ghcr.io/traptitech/traq to 7964a6a

Author: trap-renovate[bot]

traq-dev/backend/deployment-patch.yaml

@@ -9,7 +9,7 @@ spec:
         kubernetes.io/hostname: s512.tokyotech.org
       containers:
         - name: traq-backend
-          image: ghcr.io/traptitech/traq:master@sha256:67219e36c17f9941dcdb237fc250007dd46b2b91d3174cb070a403248e9b9e06
+          image: ghcr.io/traptitech/traq:master@sha256:7964a6a1f50541f0643467b3e375e087b6751cc38147f22e6d1a628d6c1d0e73
           args: ["serve", "--pprof"]
           env:
             - name: TRAQ_EXTERNALAUTH_TRAQ_CLIENTID