Bump github.com/ipfs/go-datastore from 0.4.2 to 0.4.4

Bumps [github.com/ipfs/go-datastore](https://github.com/ipfs/go-datastore) from 0.4.2 to 0.4.4.
- [Release notes](https://github.com/ipfs/go-datastore/releases)
- [Commits](https://github.com/ipfs/go-datastore/compare/v0.4.2...v0.4.4)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

go.mod

 module github.com/ipfs/go-ds-flatfs
 
 require (
-	github.com/ipfs/go-datastore v0.4.2
+	github.com/ipfs/go-datastore v0.4.4
 	github.com/ipfs/go-log v1.0.3
 	github.com/jbenet/goprocess v0.1.3
 )

go.sum

@@ -6,6 +6,8 @@ github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/ipfs/go-datastore v0.4.2 h1:h8/n7WPzhp239kkLws+epN3Ic7YtcBPgcaXfEfdVDWM=
 github.com/ipfs/go-datastore v0.4.2/go.mod h1:SX/xMIKoCszPqp+z9JhPYCmoOoXTvaa13XEbGtsFUhA=
+github.com/ipfs/go-datastore v0.4.4 h1:rjvQ9+muFaJ+QZ7dN5B1MSDNQ0JVZKkkES/rMZmA8X8=
+github.com/ipfs/go-datastore v0.4.4/go.mod h1:SX/xMIKoCszPqp+z9JhPYCmoOoXTvaa13XEbGtsFUhA=
 github.com/ipfs/go-ipfs-delay v0.0.0-20181109222059-70721b86a9a8/go.mod h1:8SP1YXK1M1kXuc4KJZINY3TQQ03J2rwBG9QfXmbRPrw=
 github.com/ipfs/go-log v1.0.2 h1:s19ZwJxH8rPWzypjcDpqPLIyV7BnbLqvpli3iZoqYK0=
 github.com/ipfs/go-log v1.0.2/go.mod h1:1MNjMxe0u6xvJZgeqbJ8vdo2TKaGwZ1a0Bpza+sr2Sk=