sstate-cache-management: fix regex for 'sigdata' stamp files

Given file names like
    6.4.do_fetch.sigdata.821b6c62f9f2bd8b7e1378656b8319697a21f6f6e4a351f98dc325a18ef7ed0f,
I'm pretty sure we want to match the dot here, not any character.

Fixes: 2fa1b25d7485 ("sstate-cache-management: Rewrite in python") in oe-core
Fixes: b723fcaac52f ("sstate-cache-management: Rewrite in python") in poky
(From OE-Core rev: 64281de7e352aaf48aa8c60b68633c54471fe353)

Signed-off-by: André Draszik <andre.draszik@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/sstate-cache-management.py

@@ -147,7 +147,7 @@ def remove_by_stamps(args, paths):
     for stamps_dir in args.stamps_dir:
         stamps_path = Path(stamps_dir)
         assert stamps_path.is_dir()
-        re_sigdata = re.compile(r"do_.*.sigdata\.([^.]*)")
+        re_sigdata = re.compile(r"do_.*\.sigdata\.([^.]*)")
         all_sums |= set(
             [
                 re_sigdata.search(x.parts[-1]).group(1)