ci: switch to actively maintained rust toolchain action

.github/workflows/centos7.yml

@@ -55,13 +55,7 @@ jobs:
         fi
         ln -s /usr/local/git/bin/git /usr/local/bin/git
     - name: "Install Rust"
-      uses: actions-rs/toolchain@v1
-      with:
-        profile: "minimal"
-        toolchain: "stable"
-        override: true
-      env:
-        ACTIONS_ALLOW_UNSECURE_COMMANDS: "true"
+      uses: dtolnay/rust-toolchain@stable
     - uses: actions/checkout@v3
     - uses: Swatinem/rust-cache@v2
       with:

.github/workflows/fmt.yml

@@ -29,12 +29,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: "Install Rust"
-      uses: actions-rs/toolchain@v1
-      with:
-        profile: "minimal"
-        toolchain: "nightly"
-        override: true
-        components: "rustfmt"
+      uses: dtolnay/rust-toolchain@stable
     - name: Rust formatting
       run: cargo +nightly fmt --all -- --check
     - name: Install stylua

.github/workflows/rocky.yml

@@ -42,13 +42,7 @@ jobs:
       shell: bash
       run: "dnf install -y git"
     - name: "Install Rust"
-      uses: actions-rs/toolchain@v1
-      with:
-        profile: "minimal"
-        toolchain: "stable"
-        override: true
-      env:
-        ACTIONS_ALLOW_UNSECURE_COMMANDS: "true"
+      uses: dtolnay/rust-toolchain@stable
     - uses: actions/checkout@v3
     - name: workaround git permission guff
       run: git config --global --add safe.directory /__w/kumomta/kumomta

.github/workflows/ubuntu.yml

@@ -54,13 +54,7 @@ jobs:
       shell: bash
       run: "apt update"
     - name: "Install Rust"
-      uses: actions-rs/toolchain@v1
-      with:
-        profile: "minimal"
-        toolchain: "stable"
-        override: true
-      env:
-        ACTIONS_ALLOW_UNSECURE_COMMANDS: "true"
+      uses: dtolnay/rust-toolchain@stable
     - uses: actions/checkout@v3
     - name: workaround git permission guff
       run: git config --global --add safe.directory /__w/kumomta/kumomta