update backup security contact to myself (#1023)

Author: pietroalbini

locales/core.ftl

@@ -12,9 +12,9 @@
 -security-coordinator-public-key-href =
         https://pgp.mit.edu/pks/lookup?op=vindex&search=0xDAE717EFE9424541
 -backup-security-contact-email-anchor =
-        <a href="mailto:[email protected]" lang="en-US">Alex Crichton</a>
+        <a href="mailto:[email protected]" lang="en-US">Pietro Albini</a>
 -backup-security-contact-public-key-href =
-        https://pgp.mit.edu/pks/lookup?op=vindex&amp;search=0x5D54B6F551FF5E33
+        https://pgp.mit.edu/pks/lookup?op=vindex&amp;search=0x0490381A6F58BCDA
 
 -internals-rust-lang-org-href =
         https://internals.rust-lang.org/
@@ -27,4 +27,4 @@
 -rustlang-security-announcements-subscribe-anchor =
         <a href="mailto:[email protected]">[email protected]</a>
 -distros-openwall-email-anchor =
-        <a href="https://oss-security.openwall.org/wiki/mailing-lists/distros" lang="en-US">distros@openwall</a>
+        <a href="https://oss-security.openwall.org/wiki/mailing-lists/distros" lang="en-US">distros@openwall</a>