digest: bump block-buffer to v0.11.0-rc.2 (#1678)

Notably this version drops the `crypto-common` dependency

Author: tarcieri

Cargo.lock

@@ -16,7 +16,7 @@ categories = ["cryptography", "no-std"]
 crypto-common = "0.2.0-rc.0"
 
 # optional dependencies
-block-buffer = { version = "0.11.0-rc.0", optional = true }
+block-buffer = { version = "0.11.0-rc.2", optional = true }
 subtle = { version = "2.4", default-features = false, optional = true }
 blobby = { version = "0.3", optional = true }
 const-oid = { version = "0.10.0-rc.0", optional = true }