Update dependencies

.github/workflows/rust.yml

@@ -21,7 +21,7 @@ jobs:
             fail-fast: false
             matrix:
                 os: [macos-latest, ubuntu-latest, windows-latest]
-                rust: [stable, 1.42.0]
+                rust: [stable, 1.56.0]
         steps:
             - uses: actions/checkout@v2
             - uses: dtolnay/rust-toolchain@master

Cargo.toml

@@ -9,14 +9,14 @@ keywords = ["epub", "ebook"]
 license = "GPL-3.0"
 name = "epub"
 repository = "https://github.com/danigm/epub-rs.git"
-version = "2.1.0"
-edition = "2018"
+version = "2.1.1"
+edition = "2021"
 
 [dependencies]
-regex = "1.4.2"
-xml-rs = "0.8.3"
-zip = { version = "0.5.13", default-features = false, features = [
+regex = "1.8.4"
+xml-rs = "0.8.14"
+zip = { version = "0.6.6", default-features = false, features = [
     "deflate",
-] } # we can't upgrade because of MSRV
-percent-encoding = "2.1.0"
-thiserror = "1.0"
+] }
+percent-encoding = "2.3.0"
+thiserror = "1.0.40"