rust: update zstd dependency stable

rust: update zstd dependency

Let's try to be the most up-to-date for this cycle.
Fedora already has this version packaged, it's an added bonus.

--- a/rust/Cargo.lock	Mon Mar 13 14:19:02 2023 +0000
+++ b/rust/Cargo.lock	Mon Mar 06 11:58:37 2023 +0100
@@ -1425,18 +1425,18 @@
 
 [[package]]
 name = "zstd"
-version = "0.11.2+zstd.1.5.2"
+version = "0.12.3+zstd.1.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "20cc960326ece64f010d2d2107537f26dc589a6573a316bd5b1dba685fa5fde4"
+checksum = "76eea132fb024e0e13fd9c2f5d5d595d8a967aa72382ac2f9d39fcc95afd0806"
 dependencies = [
  "zstd-safe",
 ]
 
 [[package]]
 name = "zstd-safe"
-version = "5.0.2+zstd.1.5.2"
+version = "6.0.4+zstd.1.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d2a5585e04f9eea4b2a3d1eca508c4dee9592a89ef6f450c11719da0726f4db"
+checksum = "7afb4b54b8910cf5447638cb54bf4e8a65cbedd783af98b98c62ffe91f185543"
 dependencies = [
  "libc",
  "zstd-sys",
@@ -1444,10 +1444,11 @@
 
 [[package]]
 name = "zstd-sys"
-version = "2.0.1+zstd.1.5.2"
+version = "2.0.7+zstd.1.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9fd07cbbc53846d9145dbffdf6dd09a7a0aa52be46741825f5c97bdd4f73f12b"
+checksum = "94509c3ba2fe55294d752b79842c530ccfab760192521df74a081a78d2b3c7f5"
 dependencies = [
  "cc",
  "libc",
+ "pkg-config",
 ]

--- a/rust/hg-core/Cargo.toml	Mon Mar 13 14:19:02 2023 +0000
+++ b/rust/hg-core/Cargo.toml	Mon Mar 06 11:58:37 2023 +0100
@@ -34,7 +34,7 @@
 crossbeam-channel = "0.5.6"
 log = "0.4.17"
 memmap2 = { version = "0.5.8", features = ["stable_deref_trait"] }
-zstd = "0.11.2"
+zstd = "0.12"
 format-bytes = "0.3.0"
 # once_cell 1.15 uses edition 2021, while the heptapod CI
 # uses an old version of Cargo that doesn't support it.