go.mod: Upgrade to quic-go v0.37.3

Fixes #5680 once and for all! Hopefully :)

Thank you @marten-seemann for your excellent work!

go.mod

@@ -17,7 +17,7 @@ require (
 	github.com/mastercactapus/proxyprotocol v0.0.4
 	github.com/mholt/acmez v1.2.0
 	github.com/prometheus/client_golang v1.14.0
-	github.com/quic-go/quic-go v0.37.2
+	github.com/quic-go/quic-go v0.37.3
 	github.com/smallstep/certificates v0.24.3-rc.5
 	github.com/smallstep/nosql v0.6.0
 	github.com/smallstep/truststore v0.12.1

go.sum

@@ -863,8 +863,8 @@ github.com/quic-go/qpack v0.4.0 h1:Cr9BXA1sQS2SmDUWjSofMPNKmvF6IiIfDRmgU0w1ZCo=
 github.com/quic-go/qpack v0.4.0/go.mod h1:UZVnYIfi5GRk+zI9UMaCPsmZ2xKJP7XBUvVyT1Knj9A=
 github.com/quic-go/qtls-go1-20 v0.3.1 h1:O4BLOM3hwfVF3AcktIylQXyl7Yi2iBNVy5QsV+ySxbg=
 github.com/quic-go/qtls-go1-20 v0.3.1/go.mod h1:X9Nh97ZL80Z+bX/gUXMbipO6OxdiDi58b/fMC9mAL+k=
-github.com/quic-go/quic-go v0.37.2 h1:lFTYNpXNc5nfkCMfQ9nFCSa+IZAB9OgxFHbWzwxjU+o=
-github.com/quic-go/quic-go v0.37.2/go.mod h1:YsbH1r4mSHPJcLF4k4zruUkLBqctEMBDR6VPvcYjIsU=
+github.com/quic-go/quic-go v0.37.3 h1:pkHH3xaMNUNAh6OtgEV/0K6Fz+YIJXhPzgd/ShiRDm4=
+github.com/quic-go/quic-go v0.37.3/go.mod h1:YsbH1r4mSHPJcLF4k4zruUkLBqctEMBDR6VPvcYjIsU=
 github.com/rcrowley/go-metrics v0.0.0-20181016184325-3113b8401b8a/go.mod h1:bCqnVzQkZxMG4s8nGwiZ5l3QUCyqpo9Y+/ZMZ9VjZe4=
 github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
 github.com/rogpeppe/fastuuid v1.1.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=