scripts: Fix twisterlib for ruff - SIM401

This fixes the ruff linting error SIM401,
where if-else construction is used instead
of dict.get().

Signed-off-by: Lukasz Mrugala <lukaszx.mrugala@intel.com>

.ruff-excludes.toml

@@ -768,7 +768,6 @@
 "./scripts/pylib/twister/twisterlib/config_parser.py" = [
     "B028",     # https://docs.astral.sh/ruff/rules/no-explicit-stacklevel
     "B904",     # https://docs.astral.sh/ruff/rules/raise-without-from-inside-except
-    "SIM401",   # https://docs.astral.sh/ruff/rules/if-else-block-instead-of-dict-get
     "UP007",    # https://docs.astral.sh/ruff/rules/non-pep604-annotation
     "UP031",    # https://docs.astral.sh/ruff/rules/printf-string-formatting
 ]
@@ -872,9 +871,6 @@
     "UP015",    # https://docs.astral.sh/ruff/rules/redundant-open-modes
     "UP031",    # https://docs.astral.sh/ruff/rules/printf-string-formatting
 ]
-"./scripts/pylib/twister/twisterlib/statuses.py" = [
-    "SIM401",   # https://docs.astral.sh/ruff/rules/if-else-block-instead-of-dict-get
-]
 "./scripts/pylib/twister/twisterlib/testinstance.py" = [
     "B006",     # https://docs.astral.sh/ruff/rules/mutable-argument-default
     "B904",     # https://docs.astral.sh/ruff/rules/raise-without-from-inside-except

scripts/pylib/twister/twisterlib/config_parser.py

@@ -248,10 +248,7 @@ class TwisterConfigParser:
 
         for k, kinfo in self.testsuite_valid_keys.items():
             if k not in d:
-                if "required" in kinfo:
-                    required = kinfo["required"]
-                else:
-                    required = False
+                required = kinfo.get("required", False)
 
                 if required:
                     raise ConfigurationError(

scripts/pylib/twister/twisterlib/statuses.py

@@ -35,7 +35,7 @@ class TwisterStatus(str, Enum):
             TwisterStatus.STARTED: Fore.MAGENTA,
             TwisterStatus.NONE: Fore.MAGENTA
         }
-        return status2color[status] if status in status2color else Fore.RESET
+        return status2color.get(status, Fore.RESET)
 
     # All statuses below this comment can be used for TestCase
     BLOCK = 'blocked'