build(deps): bump systemd/mkosi

Bumps [systemd/mkosi](https://github.com/systemd/mkosi) from dbce89aabda438ba58080366631b2c242e365f21 to 070528fec478fc93af7ec057a5d2fd0045123c99.
- [Release notes](https://github.com/systemd/mkosi/releases)
- [Changelog](https://github.com/systemd/mkosi/blob/main/NEWS.md)
- [Commits](https://github.com/systemd/mkosi/compare/dbce89aabda438ba58080366631b2c242e365f21...070528fec478fc93af7ec057a5d2fd0045123c99)

---
updated-dependencies:
- dependency-name: systemd/mkosi
  dependency-type: direct:production
...

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

.github/workflows/mkosi.yml

@@ -76,7 +76,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
-    - uses: systemd/mkosi@dbce89aabda438ba58080366631b2c242e365f21
+    - uses: systemd/mkosi@070528fec478fc93af7ec057a5d2fd0045123c99
 
     - name: Configure
       run: |