gnu: tbb: Update to 2020.2.

* gnu/packages/tbb.scm (tbb): Update to 2020.2.

gnu/packages/tbb.scm

@@ -29,7 +29,7 @@ (define-module (gnu packages tbb)
 (define-public tbb
   (package
     (name "tbb")
-    (version "2020.1")
+    (version "2020.2")
     (source (origin
               (method git-fetch)
               (uri (git-reference
@@ -38,7 +38,7 @@ (define-public tbb
               (file-name (git-file-name name version))
               (sha256
                (base32
-                "1vrh1mr9jmj46as9y8j5q1hpvihzd1iq4jr1y4x9a19dw8b7yk56"))
+                "0h8kdxikpq2v4a2h9cj33ril9kj0ig47n0vvbd92wabkn442jwar"))
               (modules '((guix build utils)))
               (snippet
                '(begin