chore(deps/npm): bump the observable group with 2 updates

Bumps the observable group with 2 updates: [@observablehq/runtime](https://github.com/observablehq/runtime) and [@observablehq/stdlib](https://github.com/observablehq/stdlib).


Updates `@observablehq/runtime` from 5.9.5 to 5.9.8
- [Release notes](https://github.com/observablehq/runtime/releases)
- [Commits](observablehq/runtime@v5.9.5...v5.9.8)

Updates `@observablehq/stdlib` from 5.8.4 to 5.8.7
- [Release notes](https://github.com/observablehq/stdlib/releases)
- [Commits](observablehq/stdlib@v5.8.4...v5.8.7)

---
updated-dependencies:
- dependency-name: "@observablehq/runtime"
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: observable
- dependency-name: "@observablehq/stdlib"
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: observable
...

Signed-off-by: dependabot[bot] <support@github.com>

packages/observablehq_runtime/package.json

@@ -26,8 +26,8 @@
 	},
 	"devDependencies": {
 		"@observablehq/inspector": "^5.0.0",
-		"@observablehq/runtime": "^5.9.5",
-		"@observablehq/stdlib": "^5.8.4",
+		"@observablehq/runtime": "^5.9.8",
+		"@observablehq/stdlib": "^5.8.7",
 		"@wandering-app/types-observablehq_inspector": "file:../observablehq_inspector",
 		"@wandering-app/types-observablehq_stdlib": "file:../observablehq_stdlib"
 	}

packages/observablehq_stdlib/package.json

@@ -25,6 +25,6 @@
 		"directory": "packages/observablehq_stdlib"
 	},
 	"devDependencies": {
-		"@observablehq/stdlib": "^5.8.4"
+		"@observablehq/stdlib": "^5.8.7"
 	}
 }