Fix invalid escape syntax warnings

Additionally use rawstrings with all regex calls

eos/db/migrations/__init__.py

@@ -21,7 +21,7 @@ for modName in iterNamespace(__name__, __path__):
     # loop through python files, extracting update number and function, and
     # adding it to a list
     modname_tail = modName.rsplit('.', 1)[-1]
-    m = re.match("^upgrade(?P<index>\d+)$", modname_tail)
+    m = re.match(r"^upgrade(?P<index>\d+)$", modname_tail)
     if not m:
         continue
     index = int(m.group("index"))

eos/gamedata.py

@@ -573,7 +573,7 @@ class DynamicItem(EqBase):
         for kw in keywords:
             if name.startswith(f'{kw} '):
                 name = kw
-        m = re.match('(?P<mutagrade>\S+) (?P<dronetype>\S+) Drone (?P<mutatype>\S+) Mutaplasmid', name)
+        m = re.match(r'(?P<mutagrade>\S+) (?P<dronetype>\S+) Drone (?P<mutatype>\S+) Mutaplasmid', name)
         if m:
             name = '{} {}'.format(m.group('mutagrade'), m.group('mutatype'))
         return name