Bump ipykernel version to 6.5.0

[gy-mate]

This might fix #26075.

Dear reviewer: please thoroughly test this PR (I haven't tested it) by going through the steps described here in order to avoid this happening again! Thank you in advance!

[kburtram]

This change is unfortunately breaking the CI build. I need to do a different update to the Python Notebook feature this week, so I can take a look at this at the same time.

Run yarn --frozen-lockfile --network-timeout 180000
yarn install v1.22.22
$ node build/npm/preinstall.js
[1/4] Resolving packages...
[2/4] Fetching packages...
warning [email protected]: The engine "pnpm" appears to be invalid.
[3/4] Linking dependencies...
warning " > @angular/[email protected]" has incorrect peer dependency "zone.js@^0.8.4".
warning "@microsoft/1ds-core-js > @microsoft/[email protected].[15](https://github.com/microsoft/azuredatastudio/actions/runs/12610909612/job/35343906713?pr=26132#step:10:16)" has unmet peer dependency "tslib@*".
warning " > [email protected]" has incorrect peer dependency "zone.js@^0.7.2".
warning " > [email protected]" has unmet peer dependency "jquery-ui@>=1.8.0".
warning " > [email protected]" has unmet peer dependency "jquery.event.drag@>=2.3.0".
warning " > [email protected]" has unmet peer dependency "postcss@^8.0.0".
warning " > [email protected]" has unmet peer dependency "@bazel/bazelisk@>=1.7.5".
warning " > [email protected]" has unmet peer dependency "@bazel/concatjs@>=5.3.0".
[4/4] Building fresh packages...
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.
error /home/runner/work/azuredatastudio/azuredatastudio/node_modules/keytar: Command failed.
Exit code: 1
Command: prebuild-install || npm run build
Arguments: 
Directory: /home/runner/work/azuredatastudio/azuredatastudio/node_modules/keytar
Output:
> [email protected] build
> node-gyp rebuild

gyp info it worked if it ends with ok
gyp info using [email protected]
gyp info using node@20.[17](https://github.com/microsoft/azuredatastudio/actions/runs/12610909612/job/35343906713?pr=26132#step:10:18).0 | linux | x64
gyp info find Python using Python version 3.11.11 found at "/opt/hostedtoolcache/Python/3.11.11/x64/bin/python3"

gyp info spawn /opt/hostedtoolcache/Python/3.11.11/x64/bin/python3
gyp info spawn args [
gyp info spawn args '/opt/hostedtoolcache/node/20.17.0/x64/lib/node_modules/npm/node_modules/node-gyp/gyp/gyp_main.py',
gyp info spawn args 'binding.gyp',
gyp info spawn args '-f',
gyp info spawn args 'make',
gyp info spawn args '-I',
gyp info spawn args '/home/runner/work/azuredatastudio/azuredatastudio/node_modules/keytar/build/config.gypi',
gyp info spawn args '-I',
gyp info spawn args '/opt/hostedtoolcache/node/20.17.0/x64/lib/node_modules/npm/node_modules/node-gyp/addon.gypi',
gyp info spawn args '-I',
gyp info spawn args '/home/runner/.cache/node-gyp/30.5.1/include/node/common.gypi',
gyp info spawn args '-Dlibrary=shared_library',
gyp info spawn args '-Dvisibility=default',
gyp info spawn args '-Dnode_root_dir=/home/runner/.cache/node-gyp/30.5.1',
gyp info spawn args '-Dnode_gyp_dir=/opt/hostedtoolcache/node/20.17.0/x64/lib/node_modules/npm/node_modules/node-gyp',
gyp info spawn args '-Dnode_lib_file=/home/runner/.cache/node-gyp/30.5.1/<(target_arch)/node.lib',
gyp info spawn args '-Dmodule_root_dir=/home/runner/work/azuredatastudio/azuredatastudio/node_modules/keytar',
gyp info spawn args '-Dnode_engine=v8',
gyp info spawn args '--depth=.',
gyp info spawn args '--no-parallel',
gyp info spawn args '--generator-output',
gyp info spawn args 'build',
gyp info spawn args '-Goutput_dir=.'
gyp info spawn args ]
Package libsecret-1 was not found in the pkg-config search path.
Perhaps you should add the directory containing `libsecret-1.pc'
to the PKG_CONFIG_PATH environment variable
Package 'libsecret-1', required by 'virtual:world', not found
gyp: Call to 'pkg-config --cflags libsecret-1' returned exit status 1 while in binding.gyp. while trying to load binding.gyp
gyp ERR! configure error 
gyp ERR! stack Error: `gyp` failed with exit code: 1
gyp ERR! stack at ChildProcess.<anonymous> (/opt/hostedtoolcache/node/20.17.0/x64/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:297:[18](https://github.com/microsoft/azuredatastudio/actions/runs/12610909612/job/35343906713?pr=26132#step:10:19))
gyp ERR! stack at ChildProcess.emit (node:events:519:28)
gyp ERR! stack at ChildProcess._handle.onexit (node:internal/child_process:294:12)
gyp ERR! System Linux 6.8.0-1017-azure
gyp ERR! command "/opt/hostedtoolcache/node/[20](https://github.com/microsoft/azuredatastudio/actions/runs/12610909612/job/35343906713?pr=26132#step:10:21).17.0/x64/bin/node" "/opt/hostedtoolcache/node/20.17.0/x64/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /home/runner/work/azuredatastudio/azuredatastudio/node_modules/keytar
gyp ERR! node -v v20.17.0
gyp ERR! node-gyp -v v10.1.0
gyp ERR! not ok
Error: Process completed with exit code 1.
``