build(deps): bump actions/upload-artifact from 6 to 7

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/artifacts.yaml

@@ -41,7 +41,7 @@ jobs:
         run: cp LICENSE* dist
 
       - name: Upload binaries
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: rustls-ffi-x86_64-windows
           path: dist
@@ -72,7 +72,7 @@ jobs:
         run: cp LICENSE* dist
 
       - name: Upload binaries
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: rustls-ffi-x86_64-linux-gnu
           path: dist
@@ -99,7 +99,7 @@ jobs:
         run: ./debian/build.sh
 
       - name: Upload deb
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: librustls_0.15.0_amd64.deb
           path: librustls_0.15.0_amd64.deb
@@ -138,7 +138,7 @@ jobs:
         run: cp LICENSE* arm64-dist
 
       - name: Upload binaries (arm64)
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: rustls-ffi-arm64-macos
           path: arm64-dist
@@ -155,7 +155,7 @@ jobs:
         run: cp LICENSE* x86-dist
 
       - name: Upload binaries (x86_64)
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: rustls-ffi-x86_64-macos
           path: x86-dist