Fix tests hostkeys (go-gitea#17786)

allow ssh-rsa as hostkey algorithm for integration tests
source: https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/26273

integrations/git_helper_for_declarative_test.go

@@ -38,13 +38,13 @@ func withKeyFile(t *testing.T, keyname string, callback func(string)) {
 	assert.NoError(t, err)
 
 	err = os.WriteFile(path.Join(tmpDir, "ssh"), []byte("#!/bin/bash\n"+
-		"ssh -o \"UserKnownHostsFile=/dev/null\" -o \"StrictHostKeyChecking=no\" -o \"IdentitiesOnly=yes\" -i \""+keyFile+"\" \"$@\""), 0o700)
+		"ssh -o \"UserKnownHostsFile=/dev/null\" -o \"StrictHostKeyChecking=no\" -o \"HostkeyAlgorithms=+ssh-rsa\" -o \"PubkeyAcceptedAlgorithms=+ssh-rsa\" -o \"IdentitiesOnly=yes\" -i \""+keyFile+"\" \"$@\""), 0o700)
 	assert.NoError(t, err)
 
 	// Setup ssh wrapper
 	os.Setenv("GIT_SSH", path.Join(tmpDir, "ssh"))
 	os.Setenv("GIT_SSH_COMMAND",
-		"ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o IdentitiesOnly=yes -i \""+keyFile+"\"")
+		"ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o IdentitiesOnly=yes -o  HostkeyAlgorithms=+ssh-rsa -o PubkeyAcceptedAlgorithms=+ssh-rsa -i \""+keyFile+"\"")
 	os.Setenv("GIT_SSH_VARIANT", "ssh")
 
 	callback(keyFile)