CI: Remove --all-features when running cargo clippy & doc.

Including `--all-features` builds const-oid with the `arbitrary` feature
which has dependencies incompatible with the current MSRV.

.github/workflows/workspace.yml

@@ -25,7 +25,7 @@ jobs:
           components: clippy
           override: true
           profile: minimal
-      - run: cargo clippy --all-features
+      - run: cargo clippy
 
   doc:
     runs-on: ubuntu-latest
@@ -37,7 +37,7 @@ jobs:
           toolchain: stable
           override: true
           profile: minimal
-      - run: cargo doc --workspace --all-features
+      - run: cargo doc --workspace
 
   rustfmt:
     runs-on: ubuntu-latest