chore: bump go.mod to Go 1.20 and run go fix (#64)

web3-bot · web-flow · commit 7db26c0c9ffb · 2023-08-14T15:36:59.000+02:00
diff --git a/go.mod b/go.mod
@@ -1,6 +1,6 @@
 module github.com/ipfs/go-unixfsnode
 
-go 1.19
+go 1.20
 
 require (
 	github.com/ipfs/go-bitfield v1.1.0
