Re-enable req,jsonifier tests/benches

Author: bergmark

build-constraints.yaml

@@ -7219,10 +7219,6 @@ skipped-builds:
 # or if Setup fails because of missing foreign libraries.
 # Otherwise place them in expected-test-failures.
 skipped-tests:
-    # aeson-2
-    - jsonifier
-    - req
-
     # Missing foreign libraries
     - symengine
 
@@ -8035,9 +8031,6 @@ expected-benchmark-failures:
 # or if Setup fails because of missing foreign libraries.
 # Otherwise place them in expected-benchmark-failures.
 skipped-benchmarks:
-    # aeson-2
-    - jsonifier
-
     # Cyclic dependencies
     - attoparsec
     - case-insensitive