List of best mirrors for IP address 18.227.140.153, located in an unknown country.
I am very sorry, but no mirror was found. Feel free to download directly:
http://mirrordirector-mb.raspbian.org/raspbian/pool/main/s/shim-signed/shim-signed-common_1.44~1+deb12u1+15.8-1~deb12u1_all.deb