chore(deps): Bump @docker/actions-toolkit from 0.46.0 to 0.49.0

Bumps [@docker/actions-toolkit](https://github.com/docker/actions-toolkit) from 0.46.0 to 0.49.0.
- [Release notes](https://github.com/docker/actions-toolkit/releases)
- [Commits](https://github.com/docker/actions-toolkit/compare/v0.46.0...v0.49.0)

---
updated-dependencies:
- dependency-name: "@docker/actions-toolkit"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/buildkit-5561.yml

@@ -0,0 +1,16 @@
+name: buildkit-5561
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4

src/context.ts

@@ -132,12 +132,7 @@ async function getBuildArgs(inputs: Inputs, context: string, toolkit: Toolkit):
   });
   if (await toolkit.buildx.versionSatisfies('>=0.8.0')) {
     await Util.asyncForEach(inputs['build-contexts'], async buildContext => {
-      args.push(
+      args.push('--build-context', buildContext);
-        '--build-context',
-        handlebars.compile(buildContext)({
-          defaultContext: Context.gitContext()
-        })
-      );
     });
   } else if (inputs['build-contexts'].length > 0) {
     core.warning("Build contexts are only supported by buildx >= 0.8.0; the input 'build-contexts' is ignored.");

test/multi-sudo.Dockerfile

@@ -1,6 +1,5 @@
 # syntax=docker/dockerfile:1
-
+FROM --platform=$BUILDPLATFORM golang:alpine AS build
-FROM --platform=$BUILDPLATFORM alpine AS build
 ARG TARGETPLATFORM
 ARG BUILDPLATFORM
 RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM" > /log
@@ -13,7 +12,7 @@ RUN apk --update --no-cache add \
   && rm -rf /tmp/* /var/cache/apk/*
 
 USER buildx
-RUN sudo chown buildx: /log
+RUN sudo chown buildx. /log
 USER root
 
 FROM alpine