Merge branch 'renovate/git.autistici.org-ai3-go-common-digest' into 'master'

go.mod

go.sum

vendor/git.autistici.org/ai3/go-common/.gitlab-ci.yml

vendor/git.autistici.org/ai3/go-common/go.mod

vendor/git.autistici.org/ai3/go-common/go.sum

...t.autistici.org/ai3/go-common/serverutil/proxy_headers.go

vendor/github.com/cenkalti/backoff/v4/exponential.go

vendor/github.com/cespare/xxhash/v2/.travis.yml

vendor/github.com/cespare/xxhash/v2/README.md

vendor/github.com/cespare/xxhash/v2/xxhash.go

vendor/github.com/cespare/xxhash/v2/xxhash_amd64.s

vendor/github.com/cespare/xxhash/v2/xxhash_unsafe.go

vendor/github.com/felixge/httpsnoop/.gitignore

vendor/github.com/felixge/httpsnoop/.travis.yml

vendor/github.com/felixge/httpsnoop/LICENSE.txt

vendor/github.com/felixge/httpsnoop/Makefile

vendor/github.com/felixge/httpsnoop/README.md

vendor/github.com/felixge/httpsnoop/capture_metrics.go

vendor/github.com/felixge/httpsnoop/docs.go

vendor/github.com/felixge/httpsnoop/go.mod