Update CA cert after Metacrypt re-initialization

New root CA cert issued during Metacrypt vault rebuild. Same key
usage (Certificate Sign, CRL Sign), new validity period (2026-2046).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

certs/wntrmute-ca.pem

@@ -1,19 +1,19 @@
 -----BEGIN CERTIFICATE-----
-MIIC7DCCAk2gAwIBAgIVAITIcBnDi2Nw/EvHvlcOgt2rke7yMAoGCCqGSM49BAME
-MIGNMQswCQYDVQQGEwJVUzEJMAcGA1UECBMAMQkwBwYDVQQHEwAxIjAgBgNVBAoT
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-aWMgU2VydmljZXMxIzAhBgNVBAMTGldOVFJNVVRFIElzc3VpbmcgQXV0aG9yaXR5
-MB4XDTI2MDQwMzE1NTA1N1oXDTQ2MDMyOTE2NTA1N1owgY0xCzAJBgNVBAYTAlVT
-MQkwBwYDVQQIEwAxCTAHBgNVBAcTADEiMCAGA1UEChMZV05UUk1VVEUgSGVhdnkg
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-A1UEAxMaV05UUk1VVEUgSXNzdWluZyBBdXRob3JpdHkwgZswEAYHKoZIzj0CAQYF
-K4EEACMDgYYABAHsKdE1YpsMJwZ11lmAaATQpj+98T4oufDP8FncMWNJsr9iB14l
-wf4qeENuXTGIRcqAjKtIOVZEZeWNfDh38S8a3QERxP7VZb56szR/rBtLJudzT0SH
-mBKNMWxeeOq7/v4bgt/UjK5GbKxplt6olzknF/CyELnL8iWHJ9rJqi9hr/C8z6NF
-MEMwDgYDVR0PAQH/BAQDAgEGMBIGA1UdEwEB/wQIMAYBAf8CAQIwHQYDVR0OBBYE
-FEVasWoUPP5XmiyY3sAv8XKCyW08MAoGCCqGSM49BAMEA4GMADCBiAJCAQse5tQo
-+9BVX/eRjM6rZusXGguuvKbCXAyQ/eJH1wUelgDbE8qtFa884U8eqiod2NUpZXWr
-Ce3lKp8GrjY1pbcpAkIB9+2/Fjv6YOBNDc1A/F2gG6Q7RqhkqYkLS9R/flUngEm/
-lU5ZyOXooeM0ZDZOn0Y4GOsXPx0LVD7PE3pHSkbxGpA=
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+8iWHJ9rJqi9hr/C8z6NFMEMwDgYDVR0PAQH/BAQDAgEGMBIGA1UdEwEB/wQIMAYB
+Af8CAQIwHQYDVR0OBBYEFEVasWoUPP5XmiyY3sAv8XKCyW08MAoGCCqGSM49BAME
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+OvHG8ihZb6xka2BD0q6TfHWz3C00nPVRHLr+AkIBnASX1m8TwlFLyEW8BTnKyNi9
+pbpHQehx1/fF85aI3Zkuw4Hx1x9EdeCAARyuHd6E/FumPTli953PUb2FyISXvm4=
 -----END CERTIFICATE-----