Update Sourcegraph Docker insiders images

[sourcegraph-bot]

This PR contains the following updates:

Package	Update	Change
index.docker.io/sourcegraph/cadvisor	digest	964e009 -> d007b48
index.docker.io/sourcegraph/frontend	digest	16b0e89 -> 1297d78
index.docker.io/sourcegraph/github-proxy	digest	3e9c7c2 -> e468cf6
index.docker.io/sourcegraph/gitserver	digest	cf67868 -> 733467e
index.docker.io/sourcegraph/grafana	digest	d4847e2 -> 124e055
index.docker.io/sourcegraph/jaeger-agent	digest	5066517 -> 6ff8ccf
index.docker.io/sourcegraph/jaeger-all-in-one	digest	dea6b27 -> 4ac70cb
index.docker.io/sourcegraph/precise-code-intel-worker	digest	cfc8b32 -> 271dd0f
index.docker.io/sourcegraph/prometheus	digest	bae8d0b -> 437f0c8
index.docker.io/sourcegraph/query-runner	digest	01bd4d9 -> fff6122
index.docker.io/sourcegraph/repo-updater	digest	36859cc -> cee60fb
index.docker.io/sourcegraph/searcher	digest	3fb1fdc -> 220c9af
index.docker.io/sourcegraph/symbols	digest	6e257e9 -> d918e90

Source: https://github.com/sourcegraph/sourcegraph/pull/18360

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