Add python-magic as external dependency and fix print-paper-size metadata

• Added python-magic to external dependencies in manifest.py
• Fixed metadata formatting for print-paper-size in ir_actions_report.py

--HG-- branch : 17.0

models/ir_actions_report.py

@@ -146,12 +146,12 @@ class IrActionsReport(models.Model):
 
         # Get print-paper-size values
         if pf.format and pf.orientation:
-            metadata_values["print-paper-size",] = f"{pf.format} {pf.orientation}"
+            metadata_values["print-paper-size"] = f"{pf.format} {pf.orientation}"
         elif pf.format and not pf.orientation:
-            metadata_values["print-paper-size",] = f"{pf.format}"
+            metadata_values["print-paper-size"] = f"{pf.format}"
 
         # Get print-paper-margin values: top | right | bottom | left
-        metadata_values["print-paper-margin",] = (
+        metadata_values["print-paper-margin"] = (
             f"{pf.margin_top} {pf.margin_right} {pf.margin_bottom} {pf.margin_left}"
         )