[v7r3] WMS DBs: do not try to decode when it's not bytes

[fstagni]

Follow-ups for changes done in https://github.com/DIRACGrid/DIRAC/pull/5246/files and before applying #5840

BEGINRELEASENOTES

*WMS
FIX: WMS DBs: do not try to decode when it's not bytes

ENDRELEASENOTES

[DIRACGridBot]

Sweep summary

Sweep ran in https://github.com/DIRACGrid/DIRAC/actions/runs/1778894566

Failed:

• integration
  cherry-pick 1fac12c into integration failed
  check merge conflicts on a local copy of this repository

  git fetch upstream
  git checkout upstream/integration -b cherry-pick-2-1fac12c7d-integration
  git cherry-pick -x -m 1 1fac12c7d
  # Fix the conflicts
  git cherry-pick --continue
  git commit --amend -m 'sweep: #5841 WMS DBs: do not try to decode when it'"'"'s not bytes' --author='fstagni <federico.stagni@cern.ch>'
  git push -u origin cherry-pick-2-1fac12c7d-integration
  
  # If you have the GitHub CLI installed the PR can be made with
  gh pr create \
       --label 'sweep:from rel-v7r3' \
       --base integration \
       --repo DIRACGrid/DIRAC \
       --title '[sweep:integration] WMS DBs: do not try to decode when it'"'"'s not bytes' \
       --body 'Sweep #5841 `WMS DBs: do not try to decode when it'"'"'s not bytes` to `integration`.
  
  Adding original author @fstagni as watcher.
  
  BEGINRELEASENOTES
  
  *WMS
  FIX: WMS DBs: do not try to decode when it'"'"'s not bytes
  
  ENDRELEASENOTES
  Closes #1120780912'