feat(php-shim): implement random_int/random_bytes with fastrand

PHP's random_int/random_bytes are cryptographically secure, but Composer
does not rely on that property, so a non-cryptographic PRNG suffices.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 8747cba..0292112 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,6 +16,7 @@ anyhow = "1.0.102"
 async-trait = "0.1.89"
 base64 = "0.22.1"
 chrono = { version = "0.4.44", features = ["serde"] }
+fastrand = "2.4.1"
 indexmap = { version = "2.14.0", features = ["serde"] }
 md5 = "0.7.0"
 regex = "1.12.3"