tests: Increase test timeout and honor ‘GUIX_TESTS_BUILD_TIMEOUT’.

Rigid build time limits let some unit tests fail on slow hardware.

Set default timeout to 5 minutes and make it configurable via
`GUIX_TESTS_BUILD_TIMEOUT` environment variable.

* guix/tests.scm (%tests-build-timeout): New variable.
(open-connection-for-tests, call-with-external-store): Use it.
* tests/guix-environment-container.sh, tests/guix-home.sh,
tests/guix-pack-localstatedir.sh, tests/guix-pack-relocatable.sh: Use it to
define ‘GUIX_BUILD_OPTIONS’.

Change-Id: Iab63c2dcf4a3ad311a0cf2f39d7ea2ec158ddbb4
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: fossil: Update to 2.27. [security fixes]

Close a potential Denial-of-Service attack against any public-facing
Fossil server.

* gnu/packages/version-control.scm (fossil): Update to 2.27.
[arguments]<#:phases>: Add phase 'disable-broken-test'.

Change-Id: Id832a5e0e2cce4637eabe07954648eec46be3513
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: sqlite: Update to 2.50.1.

* gnu/packages/sqlite.scm (sqlite-next): Update to 2.50.1.
Add arguments.

Change-Id: Iaa2e4af1456728f3107abff735c1cbba8ea2747b
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: openssh: Update to 10.2p1.

* gnu/packages/ssh.scm (openssh): Updatet to 10.2p1.

* gnu/packages/patches/openssh-trust-guix-store-directory.patch:
  Regenerate.

Change-Id: I7214d91bd8ffd0528c4150c92abc995bd3355f0e
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: kwin: Fix tests.

* gnu/packages/kde-plasma.scm (kwin)[arguments]<#:phases>: In 'check phase,
exclude "kwin-testXwaylandInput" and "kwin-testWindowRules".

Change-Id: I9a9be8a2bc2f9105798ac9f82f4f1b58ef54f12d

gnu: sweeper: Update to 25.08.2.

* gnu/packages/kde-utils.scm (sweeper): Update to 25.08.2.

Change-Id: Ia36a422e809049e4f51010ee30656f796b4261ad

gnu: ktimer: Update to 25.08.2.

* gnu/packages/kde-utils.scm (ktimer): Update to 25.08.2.

Change-Id: Ie4867ed16ff25fafc37a4d23b450fa59db8106cf

gnu: kmouth: Update to 25.08.2.

* gnu/packages/kde-utils.scm (kmouth): Update to 25.08.2.

Change-Id: Ib971fd63e1f39b2eec90a09867adacef4347b8b7

gnu: kmousetool: Update to 25.08.2.

* gnu/packages/kde-utils.scm (kmousetool): Update to 25.08.2.

Change-Id: I34969927a1b2c95de920c38f2b7d811be22b24dc

gnu: kmag: Update to 25.08.2.

* gnu/packages/kde-utils.scm (kmag): Update to 25.08.2.

Change-Id: Ia2e8023ffc0f9262dbbc2f3b8b2451001b207a45

gnu: kontrast: Update to 25.08.2.

* gnu/packages/kde-utils.scm (kontrast): Update to 25.08.2.

Change-Id: I6051592caaf5c07ec8d94d42978a60a4f64b4022

gnu: kongress: Update to 25.08.2.

* gnu/packages/kde-utils.scm (kongress): Update to 25.08.2.

Change-Id: I7097af66444ae0a8a4505fa98fc66d6d55feeaac

gnu: kfind: Update to 25.08.2.

* gnu/packages/kde-utils.scm (kfind): Update to 25.08.2.

Change-Id: Ie873e10858e7ffd1aa156053cb85cead4731e4e2

gnu: keysmith: Update to 25.08.2.

* gnu/packages/kde-utils.scm (keysmith): Update to 25.08.2.
[inputs]: Add kirigami-addons.

Change-Id: Id01fc7e3cf72b84e17b849d57319c4528dc18708

gnu: kdialog: Update to 25.08.2.

* gnu/packages/kde-utils.scm (kdialog): Update to 25.08.2.

Change-Id: I2a132f6ce2adf67e8f797bfd35c64874e92f8617

gnu: kcharselect: Update to 25.08.2.

* gnu/packages/kde-utils.scm (kcharselect): Update to 25.08.2.

Change-Id: I883436b95c497f00782dee41d4ec84b4fe3dc089

gnu: kcalc: Update to 25.08.2.

* gnu/packages/kde-utils.scm (kcalc): Update to 25.08.2.

Change-Id: I0b1ef2f6f35ffbb40cf27649cca0b362bea35e14

gnu: kbackup: Update to 25.08.2.

* gnu/packages/kde-utils.scm (kbackup): Update to 25.08.2.

Change-Id: I69de91712243de437696e28e272d568e21a27a2c

gnu: kdebugsettings: Update to 25.08.2.

* gnu/packages/kde-utils.scm (kdebugsettings): Update to 25.08.2.

Change-Id: If6b6ba2120ab11ef379b578a1af2ba40010f307f

gnu: kate: Update to 25.08.2.

* gnu/packages/kde-utils.scm (kate): Update to 25.08.2.

Change-Id: Ib45be70444b14ca22c9625b1be72a4308f219dde