CI: Unskip 1 skipped package and update comments for the remaining 2

Packages were introduced to EPEL9 in the meantime.

Related: rhbz#2168193

tests/tests.yml

@@ -51,7 +51,7 @@
     - setuptools_scm:
         dir: .
         run: ./mocktest.sh python-setuptools_scm
-    # awaiting ipython stack in EPEL 9
+    # awaiting jupyter-client in EPEL 9
     #- ipykernel:
     #    dir: .
     #    run: ./mocktest.sh python-ipykernel
@@ -64,10 +64,9 @@
     - printrun:
         dir: .
         run: ./mocktest.sh printrun
-    # too many missing deps in EPEL 9 (boto3, tldextract, vcrpy)
-    #- dns_lexicon:
-    #    dir: .
-    #    run: ./mocktest.sh python-dns-lexicon
+    - dns_lexicon:
+        dir: .
+        run: ./mocktest.sh python-dns-lexicon
     - flit_core:
         dir: .
         run: ./mocktest.sh python-flit-core
@@ -77,7 +76,7 @@
     - setuptools:
         dir: .
         run: ./mocktest.sh python-setuptools
-    # too many missing deps in EPEL 9 (mypy, pre-commit, sphinx-issues, sphinxcontrib-log-cabinet)
+    # too many missing deps in EPEL 9 (pre-commit, sphinx-issues, pallets-sphinx-themes)
     #- markupsafe:
     #    dir: .
     #    run: ./mocktest.sh python-markupsafe