Ubuntu 20.10 のアップグレードに失敗していた

[DEFAULT]
# Default prompting and upgrade behavior, valid options:
#
#  never  - Never check for, or allow upgrading to, a new release.
#  normal - Check to see if a new release is available.  If more than one new
#           release is found, the release upgrader will attempt to upgrade to
#           the supported release that immediately succeeds the
#           currently-running release.
#  lts    - Check to see if a new LTS release is available.  The upgrader
#           will attempt to upgrade to the first LTS release available after
#           the currently-running one.  Note that if this option is used and
#           the currently-running release is not itself an LTS release the
#           upgrader will assume prompt was meant to be normal.
Prompt=normal

$ sudo do-release-upgrade
Checking for a new Ubuntu release
Failed to connect to https://changelogs.ubuntu.com/meta-release. Check your Internet connection or proxy settings
No new release found.

[METARELEASE]
URI = https://changelogs.ubuntu.com/meta-release
URI_LTS = https://changelogs.ubuntu.com/meta-release-lts
URI_UNSTABLE_POSTFIX = -development
URI_PROPOSED_POSTFIX = -proposed

URI = http://changelogs.ubuntu.com/meta-release

$ gpg --version
gpg (GnuPG) 2.2.20
libgcrypt 1.8.5
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Home: /home/username/.gnupg
サポートしているアルゴリズム:
公開鍵: RSA, ELG, DSA, ECDH, ECDSA, EDDSA
暗号方式: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256,
      TWOFISH, CAMELLIA128, CAMELLIA192, CAMELLIA256
ハッシュ: SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
圧縮: 無圧縮, ZIP, ZLIB, BZIP2

$ gpg --version
gpg (GnuPG) 2.2.24
libgcrypt 1.8.7
Copyright (C) 2020 g10 Code GmbH
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Home: ********
サポートしているアルゴリズム:
公開鍵: RSA, ELG, DSA, ECDH, ECDSA, EDDSA
暗号方式: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
    CAMELLIA128, CAMELLIA192, CAMELLIA256
ハッシュ: SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
圧縮: 無圧縮, ZIP, ZLIB, BZIP2

$ ssh -V
OpenSSH_8.3p1 Ubuntu-1, OpenSSL 1.1.1h  22 Sep 2020

$ apt show openssl
Package: openssl
Version: 1.1.1f-1ubuntu4
...

$ apt show libsecret-1-dev
Package: libsecret-1-dev
Version: 0.20.3-1
...

$ mkdor ~/work
$ cd ~/work
$ cp -r /usr/share/doc/git/contrib/credential/libsecret .
$ cd libsecret
$ make
gcc -g -O2 -Wall  -pthread -I/usr/include/libsecret-1 -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -o git-credential-libsecret.o -c git-credential-libsecret.c
gcc -o git-credential-libsecret  git-credential-libsecret.o -lsecret-1 -lgio-2.0 -lgobject-2.0 -lglib-2.0

$ git config --global credential.helper libsecret