deps: update vscode-test #4075

Problem:
GHA "Insiders" jobs sometimes fail:

    Error: VS Code CLI command failed (exit-code: null): /Users/runner/work/aws-toolkit-vscode/aws-toolkit-vscode/.vscode-test/vscode-darwin-insiders/Visual Studio Code - Insiders.app/Contents/Resources/app/bin/code --extensions-dir=/Users/runner/work/aws-toolkit-vscode/aws-toolkit-vscode/.vscode-test/extensions,--user-data-dir=/Users/runner/work/aws-toolkit-vscode/aws-toolkit-vscode/.vscode-test/user-data,--version
        at invokeVSCodeCli (/Users/runner/work/aws-toolkit-vscode/aws-toolkit-vscode/scripts/test/launchTestUtilities.ts:68:15)
        at setupVSCodeTestInstance (/Users/runner/work/aws-toolkit-vscode/aws-toolkit-vscode/scripts/test/launchTestUtilities.ts:45:23)
        at async /Users/runner/work/aws-toolkit-vscode/aws-toolkit-vscode/scripts/test/test.ts:13:38
    Failed to run tests
    Error: The process '/Users/runner/hostedtoolcache/node/16.20.2/x64/bin/npm' failed with exit code 1

Solution:
Update vscode-test dependencies.

Possibly related commits:
- microsoft/vscode-test@6a41b27
- microsoft/vscode-test@91c7f9c
- microsoft/vscode-test@3558f3b

Author: justinmk3

package-lock.json

@@ -3874,8 +3874,8 @@
         "@typescript-eslint/eslint-plugin": "^5.59.0",
         "@typescript-eslint/parser": "^5.59.1",
         "@vscode/codicons": "^0.0.33",
-        "@vscode/test-electron": "^2.3.4",
-        "@vscode/test-web": "^0.0.45",
+        "@vscode/test-electron": "^2.3.7",
+        "@vscode/test-web": "^0.0.48",
         "@vscode/vsce": "^2.19.0",
         "@vue/compiler-sfc": "^3.3.2",
         "circular-dependency-plugin": "^5.2.2",