Fix ssl alert crashes - Githubissues

Hey all!
After upgrading to OTP 25 we noticed failing connections. The problem is that after the connection receives an SSL alert it completely stops trying to reconnect until the application is restarted.
16:11:11.635 [notice] TLS :client: In state :connection received SERVER ALERT: Fatal - Certificate required

16:11:11.652 [error] GenServer #PID<0.415.0> terminating
** (CaseClauseError) no case clause matching: {:error, %Mint.HTTP1{buffer: "", host: "0.0.0.0", mode: :active, port: 4001, private: %{extensions: [], scheme: :wss, sec_websocket_key: "KQvsbsvdPPlqt1e5LmN/5A=="}, proxy_headers: [], request: %{body: nil, connection: [], content_length: nil, data_buffer: [], headers_buffer: [], method: "GET", ref: #Reference<0.2518903565.3178758153.185166>, state: :status, status: nil, transfer_encoding: [], version: nil}, requests: {[], []}, scheme_as_string: "https", socket: {:sslsocket, {:gen_tcp, #Port<0.7>, :tls_connection, :undefined}, [#PID<0.426.0>, #PID<0.425.0>]}, state: :closed, streaming_request: nil, transport: Mint.Core.Transport.SSL}, %Mint.TransportError{reason: {:tls_alert, {:certificate_required, 'TLS client: In state connection received SERVER ALERT: Fatal - Certificate required\n'}}}, []}
    (slipstream 0.8.4) lib/slipstream/connection/pipeline.ex:140: Slipstream.Connection.Pipeline.decode_message/1
    (slipstream 0.8.4) lib/slipstream/connection/pipeline.ex:34: anonymous fn/1 in Slipstream.Connection.Pipeline.handle/2
    (slipstream 0.8.4) lib/slipstream/connection/telemetry.ex:29: anonymous fn/2 in Slipstream.Connection.Telemetry.span/2
    (telemetry 1.0.0) /Users/tonnenpinguin/src/poser/deps/telemetry/src/telemetry.erl:293: :telemetry.span/3
    (slipstream 0.8.4) lib/slipstream/connection/telemetry.ex:25: Slipstream.Connection.Telemetry.span/2
    (stdlib 4.0) gen_server.erl:1120: :gen_server.try_dispatch/4
    (stdlib 4.0) gen_server.erl:1197: :gen_server.handle_msg/6
    (stdlib 4.0) proc_lib.erl:240: :proc_lib.init_p_do_apply/3
Last message: {:ssl_error, {:sslsocket, {:gen_tcp, #Port<0.7>, :tls_connection, :undefined}, [#PID<0.426.0>, #PID<0.425.0>]}, {:tls_alert, {:certificate_required, 'TLS client: In state connection received SERVER ALERT: Fatal - Certificate required\n'}}}
State: %Slipstream.Connection.State{client_pid: #PID<0.414.0>, client_ref: #Reference<0.2518903565.3178758150.185680>, config: %Slipstream.Configuration{extensions: [], headers: [], heartbeat_interval_msec: 30000, json_parser: Jason, mint_opts: [protocols: [:http1], transport_opts: [cacerts: [CACERTS], keyfile: "nerves-hub/poser-key.pem", certfile: "nerves-hub/poser-cert.pem", verify: :verify_peer, server_name_indication: 'device.nerves-hub.org']], reconnect_after_msec: [1267, 2526, 4370, 11067, 23534, 40850, 64159], rejoin_after_msec: [5000], test_mode?: false, uri: %URI{authority: "0.0.0.0:4001", fragment: nil, host: "0.0.0.0", path: "/socket/websocket", port: 4001, query: nil, scheme: "wss", userinfo: nil}}, conn: %Mint.HTTP1{buffer: "", host: "0.0.0.0", mode: :active, port: 4001, private: %{extensions: [], scheme: :wss, sec_websocket_key: "KQvsbsvdPPlqt1e5LmN/5A=="}, proxy_headers: [], request: %{body: nil, connection: [], content_length: nil, data_buffer: [], headers_buffer: [], method: "GET", ref: #Reference<0.2518903565.3178758153.185166>, state: :status, status: nil, transfer_encoding: [], version: nil}, requests: {[], []}, scheme_as_string: "https", socket: {:sslsocket, {:gen_tcp, #Port<0.7>, :tls_connection, :undefined}, [#PID<0.426.0>, #PID<0.425.0>]}, state: :open, streaming_request: nil, transport: Mint.Core.Transport.SSL}, connection_id: "5e1f7e72403ec163", current_ref: 0, current_ref_str: "0", heartbeat_ref: nil, heartbeat_timer: nil, join_params: nil, joins: %{}, leaves: %{}, metadata: %{connection_id: "5e1f7e72403ec163", start_time: ~U[2022-06-22 14:11:11.417027Z], start_time_monotonic: -576460750894614603, state: %Slipstream.Connection.State{client_pid: #PID<0.414.0>, client_ref: #Reference<0.2518903565.3178758150.185680>, config: %Slipstream.Configuration{extensions: [], headers: [], heartbeat_interval_msec: 30000, json_parser: Jason, mint_opts: [protocols: [:http1], transport_opts: [cacerts: [CACERTS], keyfile: "nerves-hub/poser-key.pem", certfile: "nerves-hub/poser-cert.pem", verify: :verify_peer, server_name_indication: 'device.nerves-hub.org']], reconnect_after_msec: [1267, 2526, 4370, 11067, 23534, 40850, 64159], rejoin_after_msec: [5000], test_mode?: false, uri: %URI{authority: "0.0.0.0:4001", fragment: nil, host: "0.0.0.0", path: "/socket/websocket", port: 4001, query: nil, scheme: "wss", userinfo: nil}}, conn: nil, connection_id: "5e1f7e72403ec163", current_ref: 0, current_ref_str: "0", heartbeat_ref: nil, heartbeat_timer: nil, join_params: nil, joins: %{}, leaves: %{}, metadata: nil, request_ref: nil, status: :opened, trace_id: "3c882d640b72cecbbb740abb580d7419", websocket: nil}, trace_id: "3c882d640b72cecbbb740abb580d7419"}, request_ref: #Reference<0.2518903565.3178758153.185166>, status: :opened, trace_id: "3c882d640b72cecbbb740abb580d7419", websocket: nil}
This patch fixes this and causes slipstream to at least keep retrying.
I'm new to the project and didn't quite know where to put a test, so pointers would be highly appreciated :)
NFIBrokerage / slipstream

Fix ssl alert crashes #50
