Fix failing Unit Test workflow by adding missing @hpcc-js/wasm-graphviz dependency#4261

Copilot wants to merge 2 commits intodependabot/npm_and_yarn/extensions/ql-vscode/d3-graphviz-5.6.0github/vscode-codeql:dependabot/npm_and_yarn/extensions/ql-vscode/d3-graphviz-5.6.0from

copilot/fix-workflow-unit-testgithub/vscode-codeql:copilot/fix-workflow-unit-testCopy head branch name to clipboard