Bump org.jetbrains.grammarkit from 2021.1.2 to 2021.1.3
Bump org.jetbrains.grammarkit from 2021.1.2 to 2021.1.3

Bumps org.jetbrains.grammarkit from 2021.1.2 to 2021.1.3.

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
asciidoctor/asciidoctor-intellij-plugin,asciidoctor/asciidoctor-intellij-plugin,asciidoctor/asciidoctor-intellij-plugin,asciidoctor/asciidoctor-intellij-plugin,asciidoctor/asciidoctor-intellij-plugin