Bump MSRV to 1.70 to reflect dependency updates

Implicit dependency upgrades are pushing our MSRV to 1.70, with no
trivial (think `-Zminimal-versions`) way to select lower versions, or
multiple `cargo update -p ... --precise ...` as multiple crates end up
selecting incompatible versions.

.github/workflows/rust.yml

@@ -24,11 +24,11 @@ jobs:
         run: cargo clippy --all --all-targets --all-features --target aarch64-linux-android -- -Dwarnings
 
   check_msrv:
-    name: Check MSRV (1.64.0)
+    name: Check MSRV (1.70.0)
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
-      - uses: dtolnay/rust-toolchain@1.64.0
+      - uses: dtolnay/rust-toolchain@1.70.0
         with:
           target: aarch64-linux-android
       - name: Check

cargo-apk/CHANGELOG.md

@@ -1,5 +1,7 @@
 # Unreleased
 
+- Bump MSRV to 1.70 to reflect dependency updates.
+
 # 0.9.7 (2022-12-12)
 
 - Reimplement default package selection based on `$PWD` or `--manifest-path` by upgrading to [`cargo-subcommand 0.11.0`](https://github.com/rust-mobile/cargo-subcommand/releases/tag/0.11.0). ([#4](https://github.com/rust-mobile/cargo-apk/pull/4))

cargo-apk/Cargo.toml

@@ -9,7 +9,7 @@ keywords = ["android", "ndk", "apk"]
 documentation = "https://docs.rs/cargo-apk"
 homepage = "https://github.com/rust-mobile/cargo-apk"
 repository = "https://github.com/rust-mobile/cargo-apk"
-rust-version = "1.64"
+rust-version = "1.70"
 
 [dependencies]
 anyhow = "1.0.57"

cargo-apk/README.md

@@ -2,6 +2,7 @@
 
 [![Actions Status](https://github.com/rust-mobile/cargo-apk/actions/workflows/rust.yml/badge.svg)](https://github.com/rust-mobile/cargo-apk/actions)
 [![Latest version](https://img.shields.io/crates/v/cargo-apk.svg?logo=rust)](https://crates.io/crates/cargo-apk)
+[![MSRV](https://img.shields.io/badge/rustc-1.70.0+-ab6000.svg)](https://blog.rust-lang.org/2023/06/01/Rust-1.70.0.html)
 [![Documentation](https://docs.rs/cargo-apk/badge.svg)](https://docs.rs/cargo-apk)
 [![Lines of code](https://tokei.rs/b1/github/rust-mobile/cargo-apk)](https://github.com/rust-mobile/cargo-apk)
 ![MIT](https://img.shields.io/badge/License-MIT-green.svg)