ci(CSpell): Add win32 dictionary

"LTSC" and "Nanoserver" were added to the win32 dictionary upstream. As
the win32 dictionary is large, it is not bundled with
@cspell/cspell-bundled-dicts, so install it via a MegaLinter
pre-command, and instruct CSpell to import it.

.dictionary.txt

@@ -1,5 +1,3 @@
 Laven
-ltsc
-nanoserver
 npmpackagejsonlintignore
 trivyignore

.mega-linter.yaml

@@ -17,6 +17,8 @@ JSON_PRETTIER_FILE_EXTENSIONS:
 MARKDOWN_MARKDOWNLINT_CONFIG_FILE: .markdownlint.yaml
 REPOSITORY_CHECKOV_CONFIG_FILE: LINTER_DEFAULT
 SPELL_CSPELL_CONFIG_FILE: LINTER_DEFAULT
+SPELL_CSPELL_PRE_COMMANDS:
+  - command: npm install @cspell/[email protected]
 TYPESCRIPT_DEFAULT_STYLE: prettier
 # Work around https://github.com/oxsecurity/megalinter/issues/1572.
 TYPESCRIPT_ES_CLI_LINT_MODE: project

cspell.config.yaml

@@ -3,6 +3,8 @@ language: en-US
 useGitignore: true
 ignorePaths:
   - .vscode
+import:
+  - "@cspell/dict-win32/cspell-ext.json"
 dictionaryDefinitions:
   - name: custom
     path: .dictionary.txt
@@ -13,3 +15,4 @@ dictionaries:
   - npm
   - python
   - python-common
+  - win32