fix(manager/pip-compile): Decrease log level for ignored args (#27706)

lib/modules/manager/pip-compile/common.spec.ts

 import { mockDeep } from 'jest-mock-extended';
 import { hostRules } from '../../../../test/util';
+import { logger } from '../../../logger';
 import {
   allowedPipOptions,
   extractHeaderCommand,
@@ -24,7 +25,10 @@ describe('modules/manager/pip-compile/common', () => {
     it.each([
       '-v',
       '--all-extras',
+      `--allow-unsafe`,
       '--generate-hashes',
+      `--no-emit-index-url`,
+      `--strip-extras`,
       '--resolver=backtracking',
       '--resolver=legacy',
       '--output-file=reqs.txt',
@@ -36,6 +40,7 @@ describe('modules/manager/pip-compile/common', () => {
           'reqs.txt',
         ),
       ).toBeObject();
+      expect(logger.warn).toHaveBeenCalledTimes(0);
     });
 
     it.each(['--resolver', '--output-file reqs.txt', '--extra = jupyter'])(

lib/modules/manager/pip-compile/common.ts

@@ -160,7 +160,7 @@ export function extractHeaderCommand(
         result.indexUrl = value;
         // TODO: add to secrets? next PR
       } else {
-        logger.warn(`pip-compile: option ${arg} not handled`);
+        logger.debug({ option }, `pip-compile: option not handled`);
       }
       continue;
     }
@@ -177,7 +177,7 @@ export function extractHeaderCommand(
       continue;
     }
 
-    logger.warn(`pip-compile: option ${arg} not handled`);
+    logger.debug({ option: arg }, `pip-compile: option not handled`);
   }
   logger.trace(
     {