github: use stable actions/download-artifact@v4 (#624)

actions/download-artifact@master branch is already deprecated and
switched to main branch.
(master branch is 121 commits behind main)

There is no need to always dare to follow main branch, so use stable v4
release.

Signed-off-by: Kentaro Hayashi <hayashi@clear-code.com>

.github/workflows/apt.yml

@@ -119,10 +119,10 @@ jobs:
  test-lxc-image: ubuntu:22.04
  steps:
  - uses: actions/checkout@master
- - uses: actions/download-artifact@master
+ - uses: actions/download-artifact@v4
  with:
  name: packages-${{ matrix.rake-job }}
- - uses: actions/download-artifact@master
+ - uses: actions/download-artifact@v4
  with:
  name: packages-apt-source-${{ matrix.rake-job }}
  - uses: canonical/setup-lxd@v0.1.1

.github/workflows/macos.yml

@@ -39,7 +39,7 @@ jobs:
  runs-on: macos-latest
  steps:
  - uses: actions/checkout@master
- - uses: actions/download-artifact@master
+ - uses: actions/download-artifact@v4
  with:
  name: packages-macos
  - name: Run test

.github/workflows/yum.yml

@@ -51,7 +51,7 @@ jobs:
  run: |
  rake yum:build YUM_TARGETS=${{ matrix.rake-job }}
  - name: Upload fluent-package rpm
- uses: actions/upload-artifact@master
+ uses: actions/upload-artifact@v4
  with:
  name: packages-${{ matrix.rake-job }}
  path: fluent-package/yum/repositories
@@ -112,7 +112,7 @@ jobs:
  test-lxc-image: images:amazonlinux/2023
  steps:
  - uses: actions/checkout@master
- - uses: actions/download-artifact@master
+ - uses: actions/download-artifact@v4
  with:
  name: packages-${{ matrix.rake-job }}
  - uses: canonical/setup-lxd@v0.1.1
@@ -138,7 +138,7 @@ jobs:
  test-lxc-image: images:almalinux/9
  steps:
  - uses: actions/checkout@master
- - uses: actions/download-artifact@master
+ - uses: actions/download-artifact@v4
  with:
  name: packages-${{ matrix.rake-job }}
  - uses: canonical/setup-lxd@v0.1.1