overlay update-ssh-keys: update openssh-keys to 0.6.2

Update openssh-keys to 0.6.2 to avoid relying on a custom branch.
Also remove custom patch from the ebuild.

Pulls in https://github.com/flatcar/update-ssh-keys/pull/14.

sdk_container/src/third_party/coreos-overlay/coreos-base/update-ssh-keys/files/0001-eclass-trick.patch

@@ -1,40 +0,0 @@
-From b91011089663e9633e0f0866eff618f8b6d16b3d Mon Sep 17 00:00:00 2001
-From: Kai Lueke <kailuke@microsoft.com>
-Date: Tue, 15 Nov 2022 18:55:42 +0100
-Subject: [PATCH] Workaround for the gentoo eclass
-
----
- Cargo.lock | 3 ++-
- Cargo.toml | 2 +-
- 2 files changed, 3 insertions(+), 2 deletions(-)
-
-diff --git a/Cargo.lock b/Cargo.lock
-index f9e965e..f3827fc 100644
---- a/Cargo.lock
-+++ b/Cargo.lock
-@@ -155,7 +155,8 @@ dependencies = [
- [[package]]
- name = "openssh-keys"
- version = "0.5.1-alpha.0"
--source = "git+https://github.com/pothos/openssh-keys?branch=add-sk-keys#66e2295928e09c596ba258482b0fad78f50d167b"
-+source = "registry+https://github.com/rust-lang/crates.io-index"
-+checksum = "91103a05342d53a67cf387a8610e523347143a4230814f385d31759431ddfa8d"
- dependencies = [
-  "base64",
-  "byteorder",
-diff --git a/Cargo.toml b/Cargo.toml
-index 1ff4f81..5ff86d7 100644
---- a/Cargo.toml
-+++ b/Cargo.toml
-@@ -14,7 +14,7 @@ clap = "2.33"
- fs2 = "0.4"
- # Public dependencies, exposed through library API.
- error-chain = { version = "0.12", default-features = false }
--openssh-keys = { git = "https://github.com/pothos/openssh-keys", branch = "add-sk-keys" }
-+openssh-keys = "0.5.1-alpha.0"
- users = "0.9"
- 
- [[bin]]
--- 
-2.38.1
-

sdk_container/src/third_party/coreos-overlay/coreos-base/update-ssh-keys/update-ssh-keys-9999.ebuild

@@ -10,12 +10,11 @@ CROS_WORKON_REPO="https://github.com"
 if [[ ${PV} == 9999 ]]; then
 	KEYWORDS="~amd64 ~arm64"
 else
-	CROS_WORKON_COMMIT="5be7dcf3415f59afb8e78d7061a854f7b0efffc9" # flatcar-master
+	CROS_WORKON_COMMIT="de1e0d83c9a9279cf85d74c1d34f790d4a87bea8" # flatcar-master
 	KEYWORDS="amd64 arm64"
 fi
 
 PATCHES=(
-    "${FILESDIR}"/0001-eclass-trick.patch
 )
 
 # sed -n 's/^"checksum \([^ ]*\) \([^ ]*\) .*/\1-\2/p' Cargo.lock