🔒️ use 2048 bit key

test/fixtures/server.crt

@@ -1,15 +1,21 @@
 -----BEGIN CERTIFICATE-----
-MIICWzCCAcSgAwIBAgIJAIlOazSpwhmAMA0GCSqGSIb3DQEBCwUAMF4xCzAJBgNV
+MIIDYDCCAkigAwIBAgIJAIlOazSpwhmAMA0GCSqGSIb3DQEBCwUAMF4xCzAJBgNV
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+3PDrTw==
 -----END CERTIFICATE-----

test/fixtures/server.key

@@ -1,15 +1,28 @@
------BEGIN RSA PRIVATE KEY-----
-MIICXQIBAAKBgQDYG398zqN6Yv/FAx77eoLLje4VNCYDXUciWBzceaZ5u/rtP/Xs
-hTQWDKFfUbb/kmniDazsCasSoNsUCrcqQPJF1jF3F9XjsZxcggDab8MAbAMhnhJa
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-XL99XfmkERWtiBA/Lz2K332qYOa/zo5c/SADx9fm7+HP
------END RSA PRIVATE KEY-----
+-----BEGIN PRIVATE KEY-----
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+1r8MiT2ty4eCk7V3qW1W88A=
+-----END PRIVATE KEY-----