add rust-toolchain, remove old sigstore

Author: wolfv

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-action@nightly
+      - uses: dtolnay/rust-toolchain@nightly
         with:
           components: rustfmt
       - name: Check formatting
@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-action@stable
+      - uses: dtolnay/rust-toolchain@stable
         with:
           components: clippy
       - name: Clippy
@@ -42,7 +42,7 @@ jobs:
         os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-action@stable
+      - uses: dtolnay/rust-toolchain@stable
       - name: Run tests
         run: cargo test --all-features --workspace
 
@@ -51,7 +51,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-action@stable
+      - uses: dtolnay/rust-toolchain@stable
       - name: Check documentation
         env:
           RUSTDOCFLAGS: -D warnings
@@ -63,7 +63,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: dtolnay/rust-action@stable
+      - uses: dtolnay/rust-toolchain@stable
 
       - name: Build conformance binary
         run: cargo build --release --example conformance --package sigstore-verify
@@ -94,7 +94,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: dtolnay/rust-action@stable
+      - uses: dtolnay/rust-toolchain@stable
 
       - name: Build conformance binary
         run: cargo build --release --example conformance --package sigstore-verify

.github/workflows/release-plz.yml

@@ -29,7 +29,7 @@ jobs:
           fetch-depth: 0
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-action@stable
+        uses: dtolnay/rust-toolchain@stable
 
       - name: Run release-plz
         uses: release-plz/[email protected]
@@ -56,7 +56,7 @@ jobs:
           fetch-depth: 0
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-action@stable
+        uses: dtolnay/rust-toolchain@stable
 
       - name: Run release-plz
         uses: release-plz/[email protected]