Merge rust-bitcoin/rust-miniscript#579: Pin serde_test to 1.0.152

1081b468be4042eda6b3bf5c63cbe8e03e90d847 Pin serde_test to 1.0.152 (Tobin C. Harding)

Pull request description:

  This is just a dev dependency so I did not think that hard about it, just took a stab at using the same version that we in for `serde` and it works.

ACKs for top commit:
  apoelstra:
    ACK 1081b468be4042eda6b3bf5c63cbe8e03e90d847

Tree-SHA512: 6f15b2eb8f845b99ab0f023cd48c5b72a5d16c384d42f548dfa012a278f2feb08e79f3b1d84047b7f07a8ac06a27227d6afa11c47c6fbabd0eb1b5216cc1e810

Author: heap-coder

contrib/test.sh

@@ -28,6 +28,7 @@ if cargo --version | grep "1\.48\.0"; then
     cargo update -p serde_json --precise 1.0.99
     cargo update -p serde --precise 1.0.152
     cargo update -p log --precise 0.4.18
+    cargo update -p serde_test --precise 1.0.152
 fi
 
 # Test bitcoind integration tests if told to (this only works with the stable toolchain)