Other: Disable TLS pin checks on QA builds

internal/dialer/dialer_pinning_checker_qa.go

@@ -0,0 +1,28 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
+
+//go:build build_qa
+
+package dialer
+
+import "net"
+
+// CheckCertificate returns whether the connection presents a known TLS certificate.
+// The QA implementation always returns nil.
+func (p *TLSPinChecker) CheckCertificate(conn net.Conn) error {
+	return nil
+}