Increment version to 1.26.7. Set release date to October 1st. Update Windows signed driver files.

src/Mount/Mount.rc

@@ -560,8 +560,8 @@ END
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 1,26,6,0
- PRODUCTVERSION 1,26,6,0
+ FILEVERSION 1,26,7,0
+ PRODUCTVERSION 1,26,7,0
  FILEFLAGSMASK 0x17L
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -578,11 +578,11 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "IDRIX"
             VALUE "FileDescription", "VeraCrypt"
-            VALUE "FileVersion", "1.26.6"
+            VALUE "FileVersion", "1.26.7"
             VALUE "LegalTrademarks", "VeraCrypt"
             VALUE "OriginalFilename", "VeraCrypt.exe"
             VALUE "ProductName", "VeraCrypt"
-            VALUE "ProductVersion", "1.26.6"
+            VALUE "ProductVersion", "1.26.7"
         END
     END
     BLOCK "VarFileInfo"