Update mdbook@latest to 0.4.26

CHANGELOG.md

@@ -10,6 +10,8 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 
 ## [Unreleased]
 
+- Update `mdbook@latest` to 0.4.26.
+
 - Support `cargo-tarpaulin`. ([#65](https://github.com/taiki-e/install-action/pull/65), thanks @orhun)
 
 - Allow installing cargo subcommands without `cargo`.

manifests/mdbook.json

@@ -17,10 +17,24 @@
     }
   },
   "latest": {
-    "version": "0.4.25"
+    "version": "0.4.26"
   },
   "0.4": {
-    "version": "0.4.25"
+    "version": "0.4.26"
+  },
+  "0.4.26": {
+    "x86_64_linux_musl": {
+      "checksum": "8a6334a932f2adf05c2647e86e9ef028714717c0a8e57b1e2d9c85f251f1a734"
+    },
+    "x86_64_macos": {
+      "checksum": "14b9d933d5bbc7a4ef4ba476d7fb8ec5d3c4b42a33c0883e6d1ff3b2ef51738d"
+    },
+    "x86_64_windows": {
+      "checksum": "60c3fa5cd51383dd4e4bc22ded1cca92c5f9b97540ac458cad62b660f9c9a43c"
+    },
+    "aarch64_linux_musl": {
+      "checksum": "4461322990ab3b3e65005fdf3b28c4e083cd8504834babf2ad726701596197bf"
+    }
   },
   "0.4.25": {
     "x86_64_linux_musl": {