chore: Update Go to 1.21

TwiN · web-flow · commit 5db67a04185b · 2024-03-18T18:26:53.000-04:00
diff --git a/go.mod b/go.mod
@@ -1,3 +1,3 @@
 module github.com/TwiN/go-pastebin
 
-go 1.20
+go 1.21

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,3 @@`
`1`	`1`	`module github.com/TwiN/go-pastebin`
`2`	`2`
`3`		`-go 1.20`
	`3`	`+go 1.21`