CI: check all targets in cargo-msrv verify test

cargo-msrv verify was verifying only library/binary targets, and missed
the test targets. Specify the check command to use so that all targets
are checked.

Signed-off-by: Manos Pitsidianakis <manos@pitsidianak.is>

.gitea/workflows/manifest_lints.yaml

@@ -76,8 +76,8 @@ jobs:
         if: success() || failure()
         run: |
           source "${HOME}/.cargo/env"
-          cargo-msrv --output-format json --log-level trace --log-target stdout --path meli verify
+          cargo-msrv --output-format json --log-level trace --log-target stdout --path meli verify -- cargo check --all-targets
-          cargo-msrv --output-format json --log-level trace --log-target stdout --path melib verify
+          cargo-msrv --output-format json --log-level trace --log-target stdout --path melib verify -- cargo check --all-targets
       - name: cargo-sort
         if: success() || failure()
         run: |