doc: add Jean-Christophe to list of TC members

JC has been appointed to the TC Implementation by the SCION Association
Board on 21.5.2024, replacing matzf.
Remove matzf from CODEOWNERS, and other docs.

.github/CODEOWNERS

@@ -11,7 +11,6 @@
 # - Either Dominik (oncilla) or Lukas (lukedirtwalker) should be involved for
 #   changes that could impact the compatibility between this implementation and
 #   their proprietary system.
-# - Matthias (matzf) would like to be involved for changes to the router
 antlr/** @oncilla @lukedirtwalker
 control/trust/** @oncilla
 gateway/dataplane/encoder.go @oncilla @lukedirtwalker
@@ -21,6 +20,5 @@ pkg/slayers/** @scionproto/scion-core-team
 pkg/snet/** @scionproto/scion-core-team
 private/trust/** @oncilla
 proto/** @oncilla @lukedirtwalker
-router/dataplane.go @matzf
 scion-pki/** @oncilla
 tools/braccept/cases/** @scionproto/scion-core-team

doc/dev/contribute.rst

@@ -93,11 +93,11 @@ implementation projects.
 
 The current members of the TC Implementation are:
 
+* Jean-Christophe Hugly (|span-github| `@jiceatscion <https://github.com/jiceatscion>`_, |span-slack| @Jean-Christophe Hugly)
 * Dominik Roos (|span-github| `@oncilla <https://github.com/oncilla>`_, |span-slack| @roosd)
 * François Wirz (|span-github| `@FR4NK-W <https://github.com/FR4NK-W>`_, |span-slack| @frank)
 * Lukas Vogel (|span-github| `@lukedirtwalker <https://github.com/lukedirtwalker>`_, |span-slack| @luke)
 * Marc Frei (|span-github| `@marcfrei <https://github.com/marcfrei>`_, |span-slack| @marcfrei)
-* Matthias Frei (|span-github| `@matzf <https://github.com/matzf>`_, |span-slack| @matzf)
 
 
 .. rubric:: Responsibilities and Tasks

doc/dev/testing/buildkite.rst

@@ -89,7 +89,7 @@ Cluster configuration
 
    The agent cluster is operated by the SCION Association, in the AWS account ``scion-association``.
 
-   Primary contacts `matzf <https://github.com/matzf>`_, `jiceatscion <https://github.com/jiceatscion>`_,
+   Primary contact `jiceatscion <https://github.com/jiceatscion>`_,
    alt contact `nicorusti <https://github.com/nicorusti>`_.