move from logrus to slog (#422)

* Migrate from logrus to slog

* fully removing logrus

* should be working now

* Update pipeline.go

Co-authored-by: Frank Olbricht <frank.olbricht@gmail.com>

* Update response-blocklist-name.go

Co-authored-by: Frank Olbricht <frank.olbricht@gmail.com>

* added null logger

* Update pipeline.go

---------

Co-authored-by: Frank Olbricht <frank.olbricht@gmail.com>

dnsclient.go

@@ -6,8 +6,9 @@ import (
 	"strings"
 	"time"
 
+	"log/slog"
+
 	"github.com/miekg/dns"
-	"github.com/sirupsen/logrus"
 )
 
 // DNSClient represents a simple DNS resolver for UDP or TCP.
@@ -65,11 +66,11 @@ func NewDNSClient(id, endpoint, network string, opt DNSClientOptions) (*DNSClien
 func (d *DNSClient) Resolve(q *dns.Msg, ci ClientInfo) (*dns.Msg, error) {
 	// Packing a message is not always a read-only operation, make a copy
 	q = q.Copy()
-
-	logger(d.id, q, ci).WithFields(logrus.Fields{
-		"resolver": d.endpoint,
-		"protocol": d.net,
-	}).Debug("querying upstream resolver")
+	log := logger(d.id, q, ci)
+	log.Debug("querying upstream resolver",
+		slog.String("resolver", d.endpoint),
+		slog.String("protocol", d.net),
+	)
 
 	q = setUDPSize(q, d.opt.UDPSize)