Use raw strings for additional regex

Fixes >=python-3.12 SyntaxWarning (gh-98401)

checkrestart

@@ -92,7 +92,7 @@ def deb_fQuery(programs, packages):
         if line.startswith('local diversion'):
             continue
 
-        m = re.match('^diversion by (\S+) (from|to): (.*)$', line)
+        m = re.match(r'^diversion by (\S+) (from|to): (.*)$', line)
         if m:
             if m.group(2) == 'from':
                 diverted = m.group(3)
@@ -405,7 +405,7 @@ def delmaps (pid):
 
 class SysProcess:
     re_name = re.compile('Name:\t(.*)$')
-    re_uids = re.compile('Uid:\t(\d+)\t(\d+)\t(\d+)\t(\d+)$')
+    re_uids = re.compile(r'Uid:\t(\d+)\t(\d+)\t(\d+)\t(\d+)$')
     processes = {}
     def get (pid):
         try:
@@ -506,7 +506,7 @@ class Process:
         null = f.find('\0')
         if null != -1:
             f = f[:null]
-        return re.sub('( \(deleted\)|.dpkg-new).*$','',f)
+        return re.sub(r'( \(deleted\)|.dpkg-new).*$','',f)
 
     # Check if a process needs to be restarted, previously we would
     # just check if it used libraries named '.dpkg-new' since that's
@@ -532,7 +532,7 @@ class Process:
             if f.endswith(' (deleted)'):
                 return 1
 
-            if re.compile("\(path inode=[0-9]+\)$").search(f):
+            if re.compile(r"\(path inode=[0-9]+\)$").search(f):
                 return 1
 
         return 0