Try updating the workflow again

.github/workflows/debug.yml

@@ -25,12 +25,30 @@ jobs:
         run: |
           echo "DEVELOPMENT_TEAM = $MAC_DEVELOPMENT_TEAM" > Xcode-config/DEVELOPMENT_TEAM.xcconfig
       - name: Install application certificate
-        uses: apple-actions/import-codesign-certs@v1
+        env: 
-        with: 
+          BUILD_CERTIFICATE_BASE64: ${{ secrets.MAC_DEVELOPMENT_CERTIFICATE_P12 }}
-          keychain: ${{ github.run_id }}
+          APPLICATION_CERTIFICATE_BASE64: ${{ secrets.MAC_APPLICATION_CERTIFICATE_P12 }}
-          keychain-password: ${{ github.run_id }}
+          P12_PASSWORD: ${{ secrets.MAC_APPLICATION_CERTIFICATE_PASSPHRASE }}
-          p12-file-base64: ${{ secrets.MAC_APPLICATION_CERTIFICATE_P12 }}
+          KEYCHAIN_PASSWORD: ${{ secrets.MAC_KEYCHAIN_PASSWORD }}
-          p12-password: ${{ secrets.MAC_APPLICATION_CERTIFICATE_PASSPHRASE }}
+        run: |
+          # create variables
+          BUILD_CERTIFICATE_PATH=$RUNNER_TEMP/build_certificate.p12
+          APP_CERTIFICATE_PATH=$RUNNER_TEMP/app_certificate.p12
+          KEYCHAIN_PATH=$RUNNER_TEMP/app-signing.keychain-db
+          
+          # import certificates from secrets
+          echo -n "$BUILD_CERTIFICATE_BASE64" | base64 --decode --output $BUILD_CERTIFICATE_PATH
+          echo -n "$APPLICATION_CERTIFICATE_BASE64" | base64 --decode --output $APP_CERTIFICATE_PATH
+          
+          # create temporary keychain
+          security create-keychain -p $KEYCHAIN_PASSWORD $KEYCHAIN_PATH
+          security set-keychain-settings -lut 21600 $KEYCHAIN_PATH
+          security unlock-keychain -p $KEYCHAIN_PASSWORD $KEYCHAIN_PATH
+          
+          # import certificates to keychain
+          security import $BUILD_CERTIFICATE_PATH -P $P12_PASSWORD -A -t cert -f pkcs12 -k $KEYCHAIN_PATH
+          security import $APP_CERTIFICATE_PATH -P $P12_PASSWORD -A -t cert -f pkcs12 -k $KEYCHAIN_PATH
+          security list-keychain -d user -s $KEYCHAIN_PATH
       - name: Run xcodebuild
         run: >
           xcodebuild