fuzz-bootspec: apply "ruff format"

This also replaces open().read() with Path().read_text().

Co-authored-by: Jörg Behrmann <behrmann@physik.fu-berlin.de>

src/fuzz/fuzz-bootspec-gen.py

@@ -4,14 +4,12 @@
 """Generate sample input for fuzz-bootspec"""
 
 import json
-import os
 import sys
+from pathlib import Path
 
-config = open(sys.argv[1]).read()
-loader = [entry for entry in open(sys.argv[2], encoding='utf-16-le').read().split('\0')
-          if len(entry) > 2]   # filter out fluff from bad decoding
-entries = [(os.path.basename(name), open(name).read())
-           for name in sys.argv[3:]]
+config = Path(sys.argv[1]).read_text()
+loader = [entry for entry in Path(sys.argv[2]).read_text(encoding='utf-16-le').split('\0') if len(entry) > 2]
+entries = [(Path(name).name, Path(name).read_text()) for name in sys.argv[3:]]
 
 data = {
     'config': config,