Update module github.com/docker/docker to v20.10.21+incompatible (#6)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

go.mod

@@ -2,7 +2,7 @@ module deviantintegral/docker-log-forwarder
 
 go 1.19
 
-require github.com/docker/docker v20.10.20+incompatible
+require github.com/docker/docker v20.10.21+incompatible
 
 require github.com/avast/retry-go v3.0.0+incompatible
 

go.sum

@@ -12,6 +12,8 @@ github.com/docker/docker v20.10.19+incompatible h1:lzEmjivyNHFHMNAFLXORMBXyGIhw/
 github.com/docker/docker v20.10.19+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/docker v20.10.20+incompatible h1:kH9tx6XO+359d+iAkumyKDc5Q1kOwPuAUaeri48nD6E=
 github.com/docker/docker v20.10.20+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+github.com/docker/docker v20.10.21+incompatible h1:UTLdBmHk3bEY+w8qeO5KttOhy6OmXWsl/FEet9Uswog=
+github.com/docker/docker v20.10.21+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKohAFqRJQ=
 github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec=
 github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=