Bump github.com/docker/docker in /functional_tests

Bumps [github.com/docker/docker](https://github.com/docker/docker) from 27.3.1+incompatible to 27.4.1+incompatible.
- [Release notes](https://github.com/docker/docker/releases)
- [Commits](moby/moby@v27.3.1...v27.4.1)

---
updated-dependencies:
- dependency-name: github.com/docker/docker
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

functional_tests/go.mod

@@ -8,7 +8,7 @@ go 1.22.0
 toolchain go1.22.5
 
 require (
-	github.com/docker/docker v27.3.1+incompatible
+	github.com/docker/docker v27.4.1+incompatible
 	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/golden v0.115.0
 	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/pdatatest v0.115.0
 	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/signalfxreceiver v0.115.0

functional_tests/go.sum

@@ -685,8 +685,8 @@ github.com/docker/cli v25.0.1+incompatible h1:mFpqnrS6Hsm3v1k7Wa/BO23oz0k121MTbT
 github.com/docker/cli v25.0.1+incompatible/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
 github.com/docker/distribution v2.8.3+incompatible h1:AtKxIZ36LoNK51+Z6RpzLpddBirtxJnzDrHLEKxTAYk=
 github.com/docker/distribution v2.8.3+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
-github.com/docker/docker v27.3.1+incompatible h1:KttF0XoteNTicmUtBO0L2tP+J7FGRFTjaEF4k6WdhfI=
-github.com/docker/docker v27.3.1+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+github.com/docker/docker v27.4.1+incompatible h1:ZJvcY7gfwHn1JF48PfbyXg7Jyt9ZCWDW+GGXOIxEwp4=
+github.com/docker/docker v27.4.1+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/docker-credential-helpers v0.7.0 h1:xtCHsjxogADNZcdv1pKUHXryefjlVRqWqIhk/uXJp0A=
 github.com/docker/docker-credential-helpers v0.7.0/go.mod h1:rETQfLdHNT3foU5kuNkFR1R1V12OJRRO5lzt2D1b5X0=
 github.com/docker/go-connections v0.5.0 h1:USnMq7hx7gwdVZq1L49hLXaFtUdTADjXGp+uj1Br63c=