Bump MSRV to 1.87 (is_multiple_of used by latest deps)

Author: niklasf

.github/workflows/test.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         toolchain:
-          - "1.85"
+          - "1.87"
           - "stable"
           - "beta"
           - "nightly"

Cargo.toml

@@ -10,7 +10,7 @@ documentation = "https://docs.rs/web-push/"
 readme = "README.md"
 keywords = ["web-push", "http-ece", "vapid"]
 categories = ["web-programming", "asynchronous"]
-rust-version = "1.85"
+rust-version = "1.87"
 edition = "2024"
 
 [features]