Update LFI-gracefulsecurity-linux.txt

Includes older SSH key format "ECDSA"

Fuzzing/LFI/LFI-gracefulsecurity-linux.txt

@@ -244,6 +244,8 @@
 ~/.ssh/id_dsa.pub
 ~/.ssh/id_rsa
 ~/.ssh/id_rsa.pub
+~/.ssh/id_ecdsa
+~/.ssh/id_ecdsa.pub
 ~/.ssh/identity
 ~/.ssh/identity.pub
 ~/.viminfo