Add reminder to bump MSRV in both places

Author: piegamesde

.github/workflows/push.yml

@@ -56,7 +56,7 @@ jobs:
           - ubuntu-latest
           - windows-latest
         rust:
-          - 1.61.0 # MSRV
+          - 1.61.0 # MSRV (also change in Cargo.toml)
           - stable
           - nightly
     steps:

Cargo.toml

@@ -14,7 +14,7 @@ repository = "https://github.com/magic-wormhole/magic-wormhole.rs"
 documentation = "https://docs.rs/magic-wormhole/latest/"
 license = "EUPL-1.2"
 edition = "2021"
-rust-version = "1.59" # MSRV
+rust-version = "1.61" # MSRV (also change in CI)
 
 [dependencies]
 serde = { version = "1.0.120", features = ["rc"] }