Bump testmark to a version that refrains from using any modern go fea…

…tures.

(Apparently our CI still tests go1.14 and 1.15, neither of which have...
os.ReadFile, of all the banalities.)

go.mod

@@ -8,6 +8,6 @@ require (
 	github.com/multiformats/go-multihash v0.0.15
 	github.com/polydawn/refmt v0.0.0-20201211092308-30ac6d18308e
 	github.com/smartystreets/goconvey v1.6.4 // indirect
-	github.com/warpfork/go-testmark v0.0.0-20210818145736-28e155e57d39
+	github.com/warpfork/go-testmark v0.3.0
 	github.com/warpfork/go-wish v0.0.0-20200122115046-b9ea61034e4a
 )

go.sum

@@ -40,8 +40,8 @@ github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1
 github.com/smartystreets/goconvey v1.6.4 h1:fv0U8FUIMPNf1L9lnHLvLhgicrIVChEkdzIKYqbNC9s=
 github.com/smartystreets/goconvey v1.6.4/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
 github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
-github.com/warpfork/go-testmark v0.0.0-20210818145736-28e155e57d39 h1:CbpOMIC5AAJ4idqForS1QTt9geIiOOc/dLASB2LJHOg=
-github.com/warpfork/go-testmark v0.0.0-20210818145736-28e155e57d39/go.mod h1:jhEf8FVxd+F17juRubpmut64NEG6I2rgkUhlcqqXwE0=
+github.com/warpfork/go-testmark v0.3.0 h1:Q81c4u7hT+BR5kNfNQhEF0VT2pmL7+Kk0wD+ORYl7iA=
+github.com/warpfork/go-testmark v0.3.0/go.mod h1:jhEf8FVxd+F17juRubpmut64NEG6I2rgkUhlcqqXwE0=
 github.com/warpfork/go-wish v0.0.0-20200122115046-b9ea61034e4a h1:G++j5e0OC488te356JvdhaM8YS6nMsjLAYF7JxCv07w=
 github.com/warpfork/go-wish v0.0.0-20200122115046-b9ea61034e4a/go.mod h1:x6AKhvSSexNrVSrViXSHUEbICjmGXhtgABaHIySUSGw=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=