Bump Sources/secp256k1/secp256k1 from 805082d to b2c8c42 (#9)

dependabot[bot] · web-flow · commit 634680036741 · 2020-08-12T07:13:36.000Z
diff --git a/Sources/secp256k1/secp256k1 b/Sources/secp256k1/secp256k1
@@ -1 +1 @@
-Subproject commit 805082de1138cb6004256282dc73fc180f34d406
+Subproject commit b2c8c42cf14869be59ecadec706248824445f97b
