WORKSPACE: bump rules_rust to 0.48.0

Change-Id: Ib2921a50e9c3273512444825054e386e57bd9ae7
Reviewed-on: https://review.monogon.dev/c/monogon/+/3304
Reviewed-by: Leopold Schabel <leo@monogon.tech>
Tested-by: Jenkins CI
diff --git a/.gitignore b/.gitignore
index 46e1a22..d39ce0d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,4 +5,7 @@
 .bazelrc.user
 .bazelrc.sandbox
 .bazeldnf
-.direnv
\ No newline at end of file
+.direnv
+
+third_party/rust/target/*
+third_party/rust_efi/target/*
\ No newline at end of file