git: ignore large commit making the curl REUSE compliant

.git-blame-ignore-revs

@@ -0,0 +1,6 @@
+# Copyright (C) 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+#
+# SPDX-License-Identifier: curl
+
+# Make repository REUSE compliant
+ad9bc5976d6661cd5b03ebc379313bf657701c14