build(deps): bump github.com/peterbourgon/diskv

Bumps [github.com/peterbourgon/diskv](https://github.com/peterbourgon/diskv) from 0.0.0-20171120014656-2973218375c3 to 2.0.1+incompatible.
- [Release notes](https://github.com/peterbourgon/diskv/releases)
- [Commits](https://github.com/peterbourgon/diskv/commits/v2.0.1)

---
updated-dependencies:
- dependency-name: github.com/peterbourgon/diskv
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

go.mod

@@ -13,7 +13,7 @@ require (
 	github.com/gorilla/mux v1.8.0
 	github.com/gregjones/httpcache v0.0.0-20190611155906-901d90724c79
 	github.com/muesli/smartcrop v0.3.0
-	github.com/peterbourgon/diskv v0.0.0-20171120014656-2973218375c3
+	github.com/peterbourgon/diskv v2.0.1+incompatible
 	github.com/prometheus/client_golang v1.14.0
 	github.com/rwcarlsen/goexif v0.0.0-20190401172101-9e8deecbddbd
 	golang.org/x/image v0.6.0

go.sum

@@ -899,8 +899,8 @@ github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRW
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 h1:zYyBkD/k9seD2A7fsi6Oo2LfFZAehjjQMERAvZLEDnQ=
 github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=
-github.com/peterbourgon/diskv v0.0.0-20171120014656-2973218375c3 h1:ZKRE3mqKoxObHs5oWjLnA1WxXhmlDDAVuE0VsuLIoNk=
-github.com/peterbourgon/diskv v0.0.0-20171120014656-2973218375c3/go.mod h1:uqqh8zWWbv1HBMNONnaR/tNboyR3/BZd58JJSHlUSCU=
+github.com/peterbourgon/diskv v2.0.1+incompatible h1:UBdAOUP5p4RWqPBg048CAvpKN+vxiaj6gdUUzhl4XmI=
+github.com/peterbourgon/diskv v2.0.1+incompatible/go.mod h1:uqqh8zWWbv1HBMNONnaR/tNboyR3/BZd58JJSHlUSCU=
 github.com/phpdave11/gofpdf v1.4.2/go.mod h1:zpO6xFn9yxo3YLyMvW8HcKWVdbNqgIfOOp2dXMnm1mY=
 github.com/phpdave11/gofpdi v1.0.12/go.mod h1:vBmVV0Do6hSBHC8uKUQ71JGW+ZGQq74llk/7bXwjDoI=
 github.com/phpdave11/gofpdi v1.0.13/go.mod h1:vBmVV0Do6hSBHC8uKUQ71JGW+ZGQq74llk/7bXwjDoI=