chore: Update the Rust toolchain in the pre-commit action

Author: siegfriedweber

.github/workflows/pr_pre-commit.yml

@@ -6,7 +6,7 @@ on:
 
 env:
   CARGO_TERM_COLOR: always
-  RUST_TOOLCHAIN_VERSION: "nightly-2025-01-15"
+  RUST_TOOLCHAIN_VERSION: "nightly-2025-05-26"
   HADOLINT_VERSION: "v1.17.6"
   NIX_VERSION: "2.25.2"