Bump github.com/libp2p/go-libp2p-core from 0.0.1 to 0.2.5

Bumps [github.com/libp2p/go-libp2p-core](https://github.com/libp2p/go-libp2p-core) from 0.0.1 to 0.2.5.
- [Release notes](https://github.com/libp2p/go-libp2p-core/releases)
- [Commits](https://github.com/libp2p/go-libp2p-core/compare/v0.0.1...v0.2.5)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

go.mod

@@ -3,7 +3,7 @@ module github.com/libp2p/go-libp2p-kbucket
 require (
 	github.com/ipfs/go-ipfs-util v0.0.1
 	github.com/ipfs/go-log v0.0.1
-	github.com/libp2p/go-libp2p-core v0.0.1
+	github.com/libp2p/go-libp2p-core v0.2.5
 	github.com/libp2p/go-libp2p-peerstore v0.1.0
 	github.com/minio/sha256-simd v0.0.0-20190131020904-2d45a736cd16
 	github.com/multiformats/go-multihash v0.0.1