nixVersions: update nix-fallback-paths (#397280)

Author: Mic92

nixos/modules/installer/tools/nix-fallback-paths.nix

@@ -1,8 +1,8 @@
 {
-  x86_64-linux = "/nix/store/kvqnqgjw3k0xmv3ypzajz3c5wf1pxnbs-nix-2.24.14";
-  i686-linux = "/nix/store/292xy9z1vjmy0888bzadmj9fmq1ccapv-nix-2.24.14";
-  aarch64-linux = "/nix/store/qsy62z6rk31s8s937nvkcdhn0ds62yax-nix-2.24.14";
-  riscv64-linux = "/nix/store/zvrzwzv534zcmhw4ai1hbc4iz229hk3p-nix-riscv64-unknown-linux-gnu-2.24.14";
-  x86_64-darwin = "/nix/store/jc7x6906wyy6csgf6br1gbwkw56nxm4l-nix-2.24.14";
-  aarch64-darwin = "/nix/store/sfrmn30fijs6qpfi7ckjkv2vdr4z590h-nix-2.24.14";
+  x86_64-linux = "/nix/store/ppvbj1hzk77il5wd5g6q5ibyyd4jsnrl-nix-2.28.1";
+  i686-linux = "/nix/store/5lb00s5p37715jh8y9nw6ihdjlzrs2bq-nix-2.28.1";
+  aarch64-linux = "/nix/store/2zy7z2ablw09s0fj511x6d6za2vswv09-nix-2.28.1";
+  riscv64-linux = "/nix/store/m4fw1gfzx7z3lp2pra1x1bajjb5d4fvi-nix-riscv64-unknown-linux-gnu-2.28.1";
+  x86_64-darwin = "/nix/store/yi9ysd086218v1k1i16ilkmnkavgrxsi-nix-2.28.1";
+  aarch64-darwin = "/nix/store/v4g8bccvg56b8y4r93c6w1f8125qs3cm-nix-2.28.1";
 }