gpgme: 1.10.0 -> 1.11.1

I've rebuild all packages that depend on gpgme and everything seems fine
so far (there are a few failures but the ones I've checked are unrelated
to gpgme).

Upstream release notes (Noteworthy changes in version 1.11.1):

 * Fixed build problems in the 1.11.0 release.

 * Added C++ interfaces which were planned for 1.11.0.

 The 1.11.0 release came with these changes:

 * New encryption API to support direct key specification including
   hidden recipients option and taking keys from a file.  This also
   allows to enforce the use of a subkey.

 * New encryption flag for the new API to enforce the use of plain
   mail addresses (addr-spec).

 * The import API can now tell whether v3 keys are skipped.  These old
   and basically broken keys are not anymore supported by GnuPG 2.1.

 * The decrypt and verify API will now return the MIME flag as
   specified by RFC-4880bis.

 * The offline mode now has an effect on gpg by disabling all network
   access.  [#3831]

 * A failed OpenPGP verification how returns the fingerprint of the
   intended key if a recent gpg version was used for signature
   creation.

 * New tool gpgme-json as native messaging server for web browsers.
   As of now public key encryption and decryption is supported.
   Requires Libgpg-error 1.29.

 * New context flag "request-origin" which has an effect when used
   with GnuPG 2.2.6 or later.

 * New context flag "no-symkey-cache" which has an effect when used
   with GnuPG 2.2.7 or later.

 * New convenience constant GPGME_KEYLIST_MODE_LOCATE.

 * Improved the Python documentation.

 * Fixed a potential regression with GnuPG 2.2.6 or later.

 * Fixed a crash in the Python bindings on 32 bit platforms.  [#3892]

 * Various minor fixes.