fix: shellcheck report

```
In ./test.sh line 99:
  $RUN "${PIP_INST[@]}" bandit[baseline]
                              ^--------^ SC2102: Ranges can only
 match single chars (mentioned due to duplicates).
```

Signed-off-by: Martin Basti <[email protected]>

test.sh

@@ -96,7 +96,7 @@ case ${ACTION} in
   ;;
 "bandit")
   setup_osbs
-  $RUN "${PIP_INST[@]}" bandit[baseline]
+  $RUN "${PIP_INST[@]}" 'bandit[baseline]'
   TEST_CMD="bandit-baseline -r atomic_reactor -ll -ii"
   ;;
 *)