gnupg2: update to 2.4.8

gnupg2: update to 2.4.8

Noteworthy changes in version 2.4.8 (2025-05-14)
------------------------------------------------

  * gpg: Fix a verification DoS due to a malicious subkey in the
    keyring.  [T7527]

  * gpg: Fix a regression in 2.4.7 for generating a key from card.
    [T7457]

  * gpg: Fix --quick-add-key for Weierstrass ECC with usage given.
    [T7506]

  * gpg: Fully implement the group key flag.  [rGedd01d8fc4]

  * gpg: Make combination of show-only-fpr-mbox and show-unusable-uid
    work.  [rGeb2a90d343]

  * gpgsm: Do not return an error code when importing a certificate
    with an empty subject.  [T7171]

  * scd: Accept P15 cards with a zero-length label.  [rG18b4ebb28a]

  * keyboxd: Use case-insensitive search for mail addresses.  [T7576]

  * gpgconf: Fix reload and kill of keyboxd.  [T7569]

  * w32: Fix posssible lockup due to lost select results.
    [rG9448d01d61]

  Release-info: https://dev.gnupg.org/T7428

Signed-off-by: Daniel Golle <[email protected]>