sagemathgh-37249: gc: update to 8.2.6

    
Update gc package to the latest stable upstream release.

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URL: sagemath#37249
Reported by: Ivan Maidanski
Reviewer(s):

build/pkgs/gc/checksums.ini

@@ -1,5 +1,5 @@
 tarball=gc-VERSION.tar.gz
-sha1=41c88cbc4bc9bf76e1a95a1500ea5b0360bc4f55
-md5=8901a6ed29ac35842420054772ea3441
-cksum=4201205407
+sha1=3f543532c47e592a8f5ea6f7a529c8ed7465a5c7
+md5=fc5351214bc2e854070ee3319181a467
+cksum=2567761321
 upstream_url=https://github.com/ivmai/bdwgc/releases/download/vVERSION/gc-VERSION.tar.gz

build/pkgs/gc/package-version.txt

@@ -1 +1 @@
-8.2.4
+8.2.6