fix: update Docker and Rust toolchain versions to resolve build failures

- Update docker/build-push-action from v5 to v6
- Update Rust version from 1.75 to 1.80 in Dockerfile
- Update Rust toolchain action to use specific version 1.80

These changes should resolve the failing release builds on GitHub Actions.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: haasonsaas

.github/workflows/release.yml

@@ -101,7 +101,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Rust
-        uses: dtolnay/rust-toolchain@stable
+        uses: dtolnay/rust-toolchain@1.80
         with:
           targets: ${{ matrix.target }}
 
@@ -170,7 +170,7 @@ jobs:
         run: echo "VERSION=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           platforms: linux/amd64,linux/arm64

Dockerfile

@@ -1,5 +1,5 @@
 # Build stage
-FROM rust:1.75-alpine AS builder
+FROM rust:1.80-alpine AS builder
 
 RUN apk add --no-cache musl-dev