Upgrade minimum version of sharp to 0.32.4

Ensure PNG to SVG test assertions are deterministic by
verifying the output of the reverse SVG to PNG roundtrip and
therefore existing thresholds, instead of snapshots of exact bytes.

package.json

@@ -52,15 +52,14 @@
   },
   "dependencies": {
     "escape-html": "^1.0.3",
-    "sharp": "^0.32.0",
+    "sharp": "^0.32.4",
     "xml2js": "^0.5.0"
   },
   "devDependencies": {
     "@babel/core": "^7.19.6",
     "@babel/preset-env": "^7.19.4",
     "@babel/preset-typescript": "^7.18.6",
     "@types/escape-html": "^1.0.2",
-    "@types/sharp": "^0.31.0",
     "@types/xml2js": "^0.4.11",
     "@typescript-eslint/eslint-plugin": "^5.40.1",
     "@typescript-eslint/parser": "^5.40.1",

test/svgOutput.test.js

@@ -19,7 +19,7 @@ test("should reuse svg as a favicon", async () => {
 });
 
 test("should generate svg favicon", async () => {
-  expect.assertions(1);
+  expect.assertions(2);
 
   const result = await favicons(logo_png, {
     icons: {
@@ -32,5 +32,28 @@ test("should generate svg favicon", async () => {
     },
   });
 
-  await expect(result).toMatchFaviconsSnapshot();
+  const svg = result.images[0].contents;
+  const deterministicSvg = Buffer.from(
+    svg.toString().replace(/png;base64,[^"]+/, "")
+  );
+  await expect({
+    ...result,
+    images: [
+      {
+        ...result.images[0],
+        contents: deterministicSvg,
+      },
+    ],
+  }).toMatchFaviconsSnapshot();
+
+  const roundtripResult = await favicons(svg, {
+    icons: {
+      android: false,
+      appleIcon: false,
+      appleStartup: false,
+      windows: false,
+      yandex: false,
+    },
+  });
+  await expect(roundtripResult).toMatchFaviconsSnapshot();
 });