fix(deps): update rust crate git2 to 0.20.0

Cargo.lock

@@ -1538,9 +1538,9 @@ checksum = "40ecd4077b5ae9fd2e9e169b102c6c330d0605168eb0e8bf79952b256dbefffd"
 
 [[package]]
 name = "git2"
-version = "0.19.0"
+version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b903b73e45dc0c6c596f2d37eccece7c1c8bb6e4407b001096387c63d0d93724"
+checksum = "3fda788993cc341f69012feba8bf45c0ba4f3291fcc08e214b4d5a7332d88aff"
 dependencies = [
  "bitflags",
  "libc",
@@ -2146,9 +2146,9 @@ checksum = "d8adc4bb1803a324070e64a98ae98f38934d91957a99cfb3a43dcbc01bc56439"
 
 [[package]]
 name = "libgit2-sys"
-version = "0.17.0+1.8.1"
+version = "0.18.0+1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "10472326a8a6477c3c20a64547b0059e4b0d086869eee31e6d7da728a8eb7224"
+checksum = "e1a117465e7e1597e8febea8bb0c410f1c7fb93b1e1cddf34363f8390367ffec"
 dependencies = [
  "cc",
  "libc",

crates/flux-releaser/Cargo.toml

@@ -31,7 +31,7 @@ sqlx = { version = "0.8.0", features = [
   "chrono",
 ] }
 chrono = "0.4.34"
-git2 = "0.19.0"
+git2 = "0.20.0"
 rustls = { version = "0.23.12" }
 
 [build-dependencies]