Jira reader: fix multiple parsing problems

Multiple parsing problems are resolved, including issues with empty
table cells, faulty recognition of closing emphasis characters, and
parsing of image attributes.

Fixes: #6212
Fixes: #6219
Fixes: #6220

pandoc.cabal

@@ -412,7 +412,7 @@ library
                  blaze-html >= 0.9 && < 0.10,
                  blaze-markup >= 0.8 && < 0.9,
                  vector >= 0.10 && < 0.13,
-                 jira-wiki-markup >= 1.1.3 && < 1.2,
+                 jira-wiki-markup >= 1.2.0 && < 1.3,
                  hslua >= 1.0.1 && < 1.1,
                  hslua-module-system >= 0.2 && < 0.3,
                  hslua-module-text >= 0.2 && < 0.3,

stack.yaml

@@ -20,7 +20,7 @@ extra-deps:
 - regex-pcre-builtin-0.95.0.8.8.35
 - doclayout-0.3
 - emojis-0.1
-- jira-wiki-markup-1.1.3
+- jira-wiki-markup-1.2.0
 - HsYAML-0.2.0.0
 - HsYAML-aeson-0.2.0.0
 - doctemplates-0.8.1