Don't use -- argument to strip

Unlike many utilities, the `strip` utility is not required by
POSIX to follow the XBD 12.2 Utility Syntax Guidelines, so need not
support `--`. On macOS, and possibly some other systems, it does
not, and `--` causes an error. Fortunately, it's okay to just not
pass it, because the value of `$TARGET_DIR` is known not to start
with `-`.

Author: EliahKagan

.github/workflows/release.yml

@@ -173,7 +173,7 @@ jobs:
 
       - name: Strip release binary (linux and macos)
         if: matrix.build == 'linux' || matrix.build == 'macos'
-        run: strip -- "$TARGET_DIR"/release/{ein,gix}
+        run: strip "$TARGET_DIR"/release/{ein,gix}
 
       - name: Strip release binary (arm)
         if: matrix.build == 'linux-arm'