Reformat the .asn files:
- 4 space indenting, including ensuring fields line up
- no tabs
- no trailing whitespace

No difference to previous when  git diff -b / --ignore-space-change
except for removal of some trailing blank lines.

Update IPAccessPDU.asn as per LI(20)P55006r1

See merge request !17

Update ts_103120_ETSIDictionaryDefinitions.xml

See merge request !11