Add new Myanmar digits to IndicSyllabicCategory.txt (#606)

[171-C20] Consensus: Accept 20 Myanmar numerals (U+116D0…U+116E3) for Eastern Pwo Karen and Pa’O in a new Myanmar Extended-C block, with range U+116D0..U+116FF for a future version of the standard. (Reference L2/22-046)

The characters have been added, but we had missed adding them to IndicSyllabicCategory.txt.

unicodetools/data/ucd/dev/IndicSyllabicCategory.txt

@@ -1353,6 +1353,7 @@ ABF0..ABF9    ; Number # Nd  [10] MEETEI MAYEK DIGIT ZERO..MEETEI MAYEK DIGIT NI
 114D0..114D9  ; Number # Nd  [10] TIRHUTA DIGIT ZERO..TIRHUTA DIGIT NINE
 11650..11659  ; Number # Nd  [10] MODI DIGIT ZERO..MODI DIGIT NINE
 116C0..116C9  ; Number # Nd  [10] TAKRI DIGIT ZERO..TAKRI DIGIT NINE
+116D0..116E3  ; Number # Nd  [20] MYANMAR PAO DIGIT ZERO..MYANMAR EASTERN PWO KAREN DIGIT NINE
 11730..11739  ; Number # Nd  [10] AHOM DIGIT ZERO..AHOM DIGIT NINE
 1173A..1173B  ; Number # No   [2] AHOM NUMBER TEN..AHOM NUMBER TWENTY
 11950..11959  ; Number # Nd  [10] DIVES AKURU DIGIT ZERO..DIVES AKURU DIGIT NINE