Bump actions/upload-artifact from 4 to 7

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...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/build_deb.yml

@@ -14,6 +14,6 @@ jobs:
       - run: cargo install cargo-deb
       - run: cargo build --release
       - run: cargo deb
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v7
         with:
           path: target/debian/*.deb

.github/workflows/ci.yml

@@ -45,7 +45,7 @@ jobs:
           mkdir -p target/{bin,man}
           cp target/release/*.1 target/man
           cp target/release/git-{mob,solo,{add,edit,delete}-coauthor} target/bin
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v7
         with:
           name: git-mob-${{ matrix.os }}
           path: |