build: upgrade to go 1.19 (#25726)

This changes the CI / release builds to use the latest Go version. It also
upgrades golangci-lint to a newer version compatible with Go 1.19.

In Go 1.19, godoc has gained official support for links and lists. The
syntax for code blocks in doc comments has changed and now requires a
leading tab character. gofmt adapts comments to the new syntax
automatically, so there are a lot of comment re-formatting changes in this
PR. We need to apply the new format in order to pass the CI lint stage with
Go 1.19.

With the linter upgrade, I have decided to disable 'gosec' - it produces
too many false-positive warnings. The 'deadcode' and 'varcheck' linters
have also been removed because golangci-lint warns about them being
unmaintained. 'unused' provides similar coverage and we already have it
enabled, so we don't lose much with this change.

cmd/evm/internal/t8ntool/transition.go

@@ -334,8 +334,9 @@ func (t *txWithKey) UnmarshalJSON(input []byte) error {
 // signUnsignedTransactions converts the input txs to canonical transactions.
 //
 // The transactions can have two forms, either
-//   1. unsigned or
-//   2. signed
+//  1. unsigned or
+//  2. signed
+//
 // For (1), r, s, v, need so be zero, and the `secretKey` needs to be set.
 // If so, we sign it here and now, with the given `secretKey`
 // If the condition above is not met, then it's considered a signed transaction.

cmd/p2psim/main.go

@@ -19,21 +19,20 @@
 // Here is an example of creating a 2 node network with the first node
 // connected to the second:
 //
-//     $ p2psim node create
-//     Created node01
+//	$ p2psim node create
+//	Created node01
 //
-//     $ p2psim node start node01
-//     Started node01
+//	$ p2psim node start node01
+//	Started node01
 //
-//     $ p2psim node create
-//     Created node02
+//	$ p2psim node create
+//	Created node02
 //
-//     $ p2psim node start node02
-//     Started node02
-//
-//     $ p2psim node connect node01 node02
-//     Connected node01 to node02
+//	$ p2psim node start node02
+//	Started node02
 //
+//	$ p2psim node connect node01 node02
+//	Connected node01 to node02
 package main
 
 import (