CI improvements - 2023/08

[chalin]

• [CI] Textlint fails locally but not in GH action #3119 - [CI] textlint workflow: use npm script for same coverage #3120
• Textlinter terminology rule adjustments #3132
• [CI] Ensure PR /fix actions push to named remote branch #3136
• [CI] Set user info before calling git cmd in fix:refcache #3158
• [CI] Set user info before calling git cmd in fix:* actions #3159
• [CI] GH actions: given env var proper scope #3161
• [CI] Ensure that link-check failures also fail the job #3163 - [CI] Record link-checking output in build+check log #3164
• [CI] Add markdown check for normalized code-blocks + .md page fixes #3177
• [CI] Ensure that lint-md --fix only fixes code-block issues #3184
• [CI] Replace npm-run-alls run-s with our own scripts #3185 - [CI] Drop npm-run-all #3190
• [CI] fix:dict fails due to missing JSON package #3187 - [CI] Use Perl Core module JSON::PP #3188
• [CI] Add JSON and NDJSON to textlint terms; update cspell dict; other copyedits #3191

Previous / next monthly CI issue:

• CI improvements - 2023/07 #3083
• CI improvements - 2023/10 #3218

For later:

• [CI] Consider adding a "fix all" PR action #3117
• [CI] Refactor/rework custom trim-code-block-and-unindent markdownlint rule #3183