feat: Use caddy's internal Proxy protocol module

Also deprecated the one we have as it's redundant with the one included in caddy. Because it's the same library behind, I do not expect any breaking change.

go.mod

@@ -3,7 +3,7 @@ module github.com/caddyserver/ingress
 go 1.21
 
 require (
-	github.com/caddyserver/caddy/v2 v2.7.5
+	github.com/caddyserver/caddy/v2 v2.7.6-0.20231024195719-67e567b7ecec
 	github.com/caddyserver/certmagic v0.19.2
 	github.com/google/uuid v1.3.1
 	github.com/mholt/acmez v1.2.0
@@ -44,7 +44,7 @@ require (
 	github.com/go-sql-driver/mysql v1.7.1 // indirect
 	github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/golang/glog v1.1.0 // indirect
+	github.com/golang/glog v1.1.2 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
 	github.com/google/cel-go v0.15.1 // indirect
@@ -68,7 +68,6 @@ require (
 	github.com/klauspost/cpuid/v2 v2.2.5 // indirect
 	github.com/libdns/libdns v0.2.1 // indirect
 	github.com/manifoldco/promptui v0.9.0 // indirect
-	github.com/mastercactapus/proxyprotocol v0.0.4 // indirect
 	github.com/mattn/go-colorable v0.1.8 // indirect
 	github.com/mattn/go-isatty v0.0.16 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
@@ -88,7 +87,7 @@ require (
 	github.com/prometheus/procfs v0.9.0 // indirect
 	github.com/quic-go/qpack v0.4.0 // indirect
 	github.com/quic-go/qtls-go1-20 v0.3.4 // indirect
-	github.com/quic-go/quic-go v0.39.0 // indirect
+	github.com/quic-go/quic-go v0.39.1 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/shopspring/decimal v1.2.0 // indirect
 	github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
@@ -121,9 +120,9 @@ require (
 	golang.org/x/time v0.3.0 // indirect
 	golang.org/x/tools v0.10.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20230803162519-f966b187b2e5 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20230920204549-e6e6cdab5c13 // indirect
-	google.golang.org/grpc v1.58.2 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20231016165738-49dd2c1f3d0b // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20231016165738-49dd2c1f3d0b // indirect
+	google.golang.org/grpc v1.59.0 // indirect
 	google.golang.org/protobuf v1.31.0 // indirect
 	gopkg.in/go-playground/assert.v1 v1.2.1 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect