Update test repo versions

Author: bjorn3

build_system/tests.rs

@@ -94,13 +94,15 @@ const BASE_SYSROOT_SUITE: &[TestCase] = &[
     TestCase::build_bin_and_run("aot.issue-72793", "example/issue-72793.rs", &[]),
 ];
 
+// FIXME(rust-random/rand#1293): Newer rand versions fail to test on Windows. Update once this is
+// fixed.
 pub(crate) static RAND_REPO: GitRepo =
-    GitRepo::github("rust-random", "rand", "0f933f9c7176e53b2a3c7952ded484e1783f0bf1", "rand");
+    GitRepo::github("rust-random", "rand", "50b9a447410860af8d6db9a208c3576886955874", "rand");
 
 pub(crate) static RAND: CargoProject = CargoProject::new(&RAND_REPO.source_dir(), "rand");
 
 pub(crate) static REGEX_REPO: GitRepo =
-    GitRepo::github("rust-lang", "regex", "341f207c1071f7290e3f228c710817c280c8dca1", "regex");
+    GitRepo::github("rust-lang", "regex", "a9b2e02352db92ce1f6e5b7ecd41b8bbffbe161a", "regex");
 
 pub(crate) static REGEX: CargoProject = CargoProject::new(&REGEX_REPO.source_dir(), "regex");
 

patches/0003-rand-Disable-rand-tests-on-mingw.patch

@@ -19,8 +19,8 @@ index 217899e..9cedeb7 100644
 +    // This is broken on x86_64-pc-windows-gnu presumably due to a broken powf implementation
 +    #[cfg_attr(all(target_os = "windows", target_env = "gnu"), ignore)]
      fn value_stability() {
-         fn test_samples<F: Float + core::fmt::Debug, D: Distribution<F>>(
-             distr: D, zero: F, expected: &[F],
+         fn test_samples<F: Float + Debug + Display + LowerExp, D: Distribution<F>>(
+             distr: D, thresh: F, expected: &[F],
 diff --git a/rand_distr/tests/value_stability.rs b/rand_distr/tests/value_stability.rs
 index 192ba74..0101ace 100644
 --- a/rand_distr/tests/value_stability.rs