don't run with all features anymore

Author: jbr

.github/workflows/ci.yaml

@@ -55,11 +55,17 @@ jobs:
         command: check
         args: --all -Z avoid-dev-deps
 
-    - name: tests
+    - name: pg tests
       uses: actions-rs/cargo@v1
       with:
         command: test
-        args: --all --all-features -- --test-threads=1
+        args: --all --features pg -- --test-threads=1
+
+    - name: sqlite tests
+      uses: actions-rs/cargo@v1
+      with:
+        command: test
+        args: --all --features sqlite
 
   check_fmt_and_docs:
     name: Checking fmt, clippy, and docs