ci: enable armv7-unknown-linux-uclibceabihf CI (#2487)

Author: SteveLauC

.github/workflows/ci.yml

@@ -298,10 +298,7 @@ jobs:
           - target: x86_64-unknown-dragonfly
           - target: x86_64-unknown-openbsd
           - target: x86_64-unknown-haiku
-
-          # Temporarily disable armv7-unknown-linux-uclibceabihf
-          # https://github.com/nix-rust/nix/issues/2200
-          #- target: armv7-unknown-linux-uclibceabihf
+          - target: armv7-unknown-linux-uclibceabihf
 
           # Disable hurd due to
           # https://github.com/nix-rust/nix/issues/2306