Lift dependencies to the workspace (Part 1) (#2070)

Changes (partial https://github.com/paritytech/polkadot-sdk/issues/994):
- Set log to `0.4.20` everywhere
- Lift `log` to the workspace

Starting with a simpler one after seeing
https://github.com/paritytech/polkadot-sdk/pull/2065 from @jsdw.
This sets the `default-features` to `false` in the root and then
overwrites that in each create to its original value. This is necessary
since otherwise the `default` features are additive and its impossible
to disable them in the crate again once they are enabled in the
workspace.

I am using a tool to do this, so its mostly a test to see that it works
as expected.

---------

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

substrate/client/network/bitswap/Cargo.toml

@@ -23,7 +23,7 @@ async-channel = "1.8.0"
 cid = "0.9.0"
 futures = "0.3.21"
 libp2p-identity = { version = "0.1.3", features = ["peerid"] }
-log = "0.4.17"
+log = { workspace = true, default-features = true }
 prost = "0.12"
 thiserror = "1.0"
 unsigned-varint = { version = "0.7.1", features = ["asynchronous_codec", "futures"] }