Update strk.kbt.io/projects/go/libravatar to latest

[guillep2k]

Backport for #8429

I'm not sure what happens when I try to backport this. I've just changed the one line in go.mod and I'm getting all these changes:

$ git reset --hard
HEAD is now at 6ab1d5a8a Changelog for v1.9.4 (#8422)

$ git checkout -b fix-7860-v19

$ vi go.mod (edit libravatar ==> `v0.0.0-20191008002943-06d1c002b251`)

$ make vendor
GO111MODULE=on go mod tidy && GO111MODULE=on go mod vendor

$ git status
On branch release/v1.9
Your branch is up to date with 'origin/release/v1.9'.

Changes not staged for commit:
  (use "git add/rm <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

        modified:   go.mod
        modified:   go.sum
        deleted:    vendor/github.com/blevesearch/segment/maketesttables.go
        deleted:    vendor/github.com/google/go-github/v24/github/gen-accessors.go
        deleted:    vendor/github.com/klauspost/compress/flate/gen.go
        deleted:    vendor/github.com/klauspost/cpuid/private-gen.go
        deleted:    vendor/github.com/lib/pq/oid/gen.go
        deleted:    vendor/golang.org/x/net/html/atom/gen.go
        deleted:    vendor/golang.org/x/sys/unix/mkasm_darwin.go
        deleted:    vendor/golang.org/x/sys/unix/mkpost.go
        deleted:    vendor/golang.org/x/sys/unix/mksyscall.go
        deleted:    vendor/golang.org/x/sys/unix/mksyscall_aix_ppc.go
        deleted:    vendor/golang.org/x/sys/unix/mksyscall_aix_ppc64.go
        deleted:    vendor/golang.org/x/sys/unix/mksyscall_solaris.go
        deleted:    vendor/golang.org/x/sys/unix/mksysctl_openbsd.go
        deleted:    vendor/golang.org/x/sys/unix/mksysnum.go
        deleted:    vendor/golang.org/x/sys/unix/types_aix.go
        deleted:    vendor/golang.org/x/sys/unix/types_darwin.go
        deleted:    vendor/golang.org/x/sys/unix/types_dragonfly.go
        deleted:    vendor/golang.org/x/sys/unix/types_freebsd.go
        deleted:    vendor/golang.org/x/sys/unix/types_netbsd.go
        deleted:    vendor/golang.org/x/sys/unix/types_openbsd.go
        deleted:    vendor/golang.org/x/sys/unix/types_solaris.go
        deleted:    vendor/golang.org/x/text/encoding/charmap/maketables.go
        deleted:    vendor/golang.org/x/text/encoding/htmlindex/gen.go
        deleted:    vendor/golang.org/x/text/encoding/internal/identifier/gen.go
        deleted:    vendor/golang.org/x/text/encoding/japanese/maketables.go
        deleted:    vendor/golang.org/x/text/encoding/korean/maketables.go
        deleted:    vendor/golang.org/x/text/encoding/simplifiedchinese/maketables.go
        deleted:    vendor/golang.org/x/text/encoding/traditionalchinese/maketables.go
        deleted:    vendor/golang.org/x/text/internal/language/compact/gen.go
        deleted:    vendor/golang.org/x/text/internal/language/compact/gen_index.go
        deleted:    vendor/golang.org/x/text/internal/language/compact/gen_parents.go
        deleted:    vendor/golang.org/x/text/internal/language/gen.go
        deleted:    vendor/golang.org/x/text/internal/language/gen_common.go
        deleted:    vendor/golang.org/x/text/language/gen.go
        deleted:    vendor/golang.org/x/text/unicode/bidi/gen.go
        deleted:    vendor/golang.org/x/text/unicode/bidi/gen_ranges.go
        deleted:    vendor/golang.org/x/text/unicode/bidi/gen_trieval.go
        deleted:    vendor/golang.org/x/text/unicode/norm/maketables.go
        deleted:    vendor/golang.org/x/text/unicode/norm/triegen.go
        deleted:    vendor/golang.org/x/text/width/gen.go
        deleted:    vendor/golang.org/x/text/width/gen_common.go
        deleted:    vendor/golang.org/x/text/width/gen_trieval.go
        deleted:    vendor/golang.org/x/tools/go/gcexportdata/main.go
        deleted:    vendor/golang.org/x/tools/internal/imports/mkindex.go
        deleted:    vendor/golang.org/x/tools/internal/imports/mkstdlib.go
        modified:   vendor/modules.txt
        modified:   vendor/strk.kbt.io/projects/go/libravatar/README.md
        modified:   vendor/strk.kbt.io/projects/go/libravatar/libravatar.go

Untracked files:
  (use "git add <file>..." to include in what will be committed)

        vendor/strk.kbt.io/projects/go/libravatar/Makefile

no changes added to commit (use "git add" and/or "git commit -a")

$ git diff origin/release/v1.9 upstream/release/v1.9
(no results)
$

$ git remote -v
origin  git@github.com:guillep2k/gitea.git (fetch)
origin  git@github.com:guillep2k/gitea.git (push)
upstream        git@github.com:go-gitea/gitea.git (fetch)
upstream        git@github.com:go-gitea/gitea.git (push)

Note: my origin is my Gitea fork and my upstream is go-gitea/gitea.

Perhaps there was a missing make vendor from a previous commit? If you guys think this is OK, then let's go ahead.