fix(deps): update rust crate system-deps to v7

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
system-deps	dependencies	major	6 -> 7

---

Release Notes

gdesmott/system-deps (system-deps)

v7.0.3

Compare Source

Other

• Update cfg-expr to 0.17

v7.0.2

Compare Source

Fixed

• fix new clippy warning

Other

• Add cargo:rerun-if-changed=Cargo.toml to config probe
• Fix some errors in docs
• update to cfg-expr 0.16

v7.0.1

Compare Source

Other

• bump minimal pkg-config version to 0.3.25

v7.0.0

Compare Source

Fixed

• fix new clippy warning

Other

• Add support for linker flags
• reformat
• update itertools dep

---

Configuration

📅 Schedule: Branch creation - "before 4am on Monday" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: Cargo.lock

Command failed: cargo update --config net.git-fetch-with-cli=true --manifest-path Cargo.toml --package system-deps@6.2.2 --precise 7.0.3
    Updating crates.io index
error: failed to select a version for the requirement `system-deps = "^6.0"`
candidate versions found which didn't match: 7.0.3
location searched: crates.io index
required by package `aom-sys v0.3.3`
    ... which satisfies dependency `aom-sys = "^0.3.3"` (locked to 0.3.3) of package `rav1e v0.7.0 (/tmp/renovate/repos/github/xiph/rav1e)`