fix(ci): remove weekly MSRV release run

.gitea/workflows/release.yml

@@ -2,8 +2,6 @@ name: Non-routine release validation
 
 on:
   workflow_dispatch:
-  schedule:
-    - cron: "17 3 * * 0"
   push:
     tags:
       - "v*"
@@ -43,13 +41,10 @@ jobs:
           toolchain: 1.97.1
           components: clippy,rustfmt
           targets: x86_64-pc-windows-gnu,x86_64-apple-darwin
-      - uses: dtolnay/rust-toolchain@master
-        with:
-          toolchain: 1.96.0
       - name: Validate the native release dependency
         run: tools/install_openjpeg_2_5_4.sh "$OPENJPEG_PREFIX"
       - name: Run the Rust-owned non-routine release graph
-        run: cargo +1.97.1 run --locked -p metacrate-ci-matrix -- release-gate --evidence artifacts/release/release-gate.json
+        run: cargo run --locked -p metacrate-ci-matrix -- release-gate --evidence artifacts/release/release-gate.json
       - name: Upload release evidence and packages
         if: always()
         uses: actions/upload-artifact@v3