Pull request #415: fix-integration-tests

Merge in GO/dnsproxy from fix-integration-tests to master

Squashed commit of the following:

commit c52d089
Author: Ainar Garipov <[email protected]>
Date:   Mon Dec 15 16:30:26 2025 +0300

    upstream: remove opendns from tests

Author: ainar-g

upstream/upstream_internal_test.go

@@ -179,9 +179,6 @@ func TestUpstreams(t *testing.T) {
 	}, {
 		bootstrap: nil,
 		address:   "https://dns.google/dns-query",
-	}, {
-		bootstrap: nil,
-		address:   "https://doh.opendns.com/dns-query",
 	}, {
 		// AdGuard DNS (DNSCrypt)
 		bootstrap: nil,
@@ -383,10 +380,6 @@ func TestUpstreamDoTBootstrap(t *testing.T) {
 	}, {
 		address:   "tls://one.one.one.one/",
 		bootstrap: "https://1.1.1.1/dns-query",
-	}, {
-		address: "tls://one.one.one.one/",
-		// Cisco OpenDNS
-		bootstrap: "sdns://AQAAAAAAAAAADjIwOC42Ny4yMjAuMjIwILc1EUAgbyJdPivYItf9aR6hwzzI1maNDL4Ev6vKQ_t5GzIuZG5zY3J5cHQtY2VydC5vcGVuZG5zLmNvbQ",
 	}}
 
 	for _, tc := range upstreams {
@@ -426,9 +419,6 @@ func TestUpstreamsInvalidBootstrap(t *testing.T) {
 	}, {
 		address:   "https://1dot1dot1dot1.cloudflare-dns.com/dns-query",
 		bootstrap: []string{"8.8.8.1", "1.0.0.1"},
-	}, {
-		address:   "https://doh.opendns.com:443/dns-query",
-		bootstrap: []string{"1.2.3.4:79", "8.8.8.8:53"},
 	}, {
 		// Cloudflare DNS (DoH)
 		address:   "sdns://AgcAAAAAAAAABzEuMC4wLjGgENk8mGSlIfMGXMOlIlCcKvq7AVgcrZxtjon911-ep0cg63Ul-I8NlFj4GplQGb_TTLiczclX57DvMV8Q-JdjgRgSZG5zLmNsb3VkZmxhcmUuY29tCi9kbnMtcXVlcnk",