Update Sourcegraph Docker insiders images

[sourcegraph-bot]

This PR contains the following updates:

Package	Update	Change
index.docker.io/sourcegraph/cadvisor	digest	d87d3f1 -> 960ab62
index.docker.io/sourcegraph/codeinsights-db	digest	fa089c3 -> 85a7010
index.docker.io/sourcegraph/codeintel-db	digest	ecdbc1e -> 7f9cfa8
index.docker.io/sourcegraph/frontend	digest	f9f2d10 -> f41aec7
index.docker.io/sourcegraph/github-proxy	digest	d3e67c1 -> 7936b2c
index.docker.io/sourcegraph/gitserver	digest	25d642b -> 5bee37c
index.docker.io/sourcegraph/grafana	digest	2afc13b -> 8c19cc4
index.docker.io/sourcegraph/jaeger-agent	digest	e3951b0 -> 96934a7
index.docker.io/sourcegraph/jaeger-all-in-one	digest	10bf818 -> ae28264
index.docker.io/sourcegraph/postgres-12.6-alpine	digest	eac49c5 -> 39db119
index.docker.io/sourcegraph/postgres_exporter	digest	ee31465 -> 84f604f
index.docker.io/sourcegraph/precise-code-intel-worker	digest	4d9c3f5 -> 00a2908
index.docker.io/sourcegraph/prometheus	digest	15d6a18 -> 6fb75f1
index.docker.io/sourcegraph/query-runner	digest	fc86751 -> 13328dc
index.docker.io/sourcegraph/repo-updater	digest	6ed1bd4 -> ff1a53a
index.docker.io/sourcegraph/searcher	digest	0058672 -> bd1870d
index.docker.io/sourcegraph/symbols	digest	e06218c -> e290497
index.docker.io/sourcegraph/worker	digest	446bc7a -> a90e6f5

Source: https://github.com/sourcegraph/sourcegraph/pull/23200

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