doc: update known issues for NCS v2.7.0

Added v2.7.0 tag to known issues.

----

- [ ] Asset Tracker v2 done by @simensrostad
- [ ] Serial LTE Modem issue checked by @MarkusLassila
- [ ]  LTE Sensor Gateway issue checked by @lemrey (NCSDK-20026)
- [ ] Low Power UART sample issue on nRF5340 DK
      by @nordic-krch and @anangl
- [ ] Thingy:53 issue checked by @MarekPieta
- [ ] Thread issues checked by @bpienk
- [ ] Zigbee issues checked by @milewr
- [ ] Matter issues checked by @markaj-nordic
- [ ] nRF Desktop, CAF, nRF Machine Learning checked by @MarekPieta
- [ ] nRF Audio (including Controller) checked
      by @koffes
- [ ] CAF issues checked by @MarekPieta
- [ ] NCS modem libraries and Networking libraries issues
      checked by @simensrostad
- [ ] Sidewalk issues checked by @annwoj
- [ ] BLE issue checked by @grochu
- [ ] BT Mesh issue checked by @Balaklaka
- [ ] Build system issue checked by @carlescufi
- [ ] DFU and FOTA issues checked by @nvlsianpu
- [ ] NFC issues checked by @grochu
- [ ] SPM issues checked by @osaether
- [ ] Crypto issues checked by @frkv
- [ ] MPSL issues checked by @laxiLang
- [ ] Radio driver issues checked by @ankuns
- [ ] SD Controller issues checked by @laxiLang
- [ ] TF-M done by @frkv
- [ ] Radio test sample issue checked by @KAGA164 and @grochu
- [ ] Wi-Fi issues checked by @bama-nordic
- [ ] SUIT DFU issues checked by @maciejpietras
- [ ] nRFxlib Modem library issues checked by @lemrey
- [ ] Zephyr issues checked by @cvinayak
- [ ] Mcuboot revisions checked by @de-nordic
- [ ] Zephyr LwM2M issues checked by @SeppoTakalo

Signed-off-by: divya pillai <[email protected]>

doc/nrf/links.txt

@@ -64,6 +64,9 @@
 .. _`hwmv2 conversion script`: https://github.com/nrfconnect/sdk-zephyr/blob/main/scripts/utils/board_v1_to_v2.py
 .. _`ncs-example-application commit f9f2da`: https://github.com/nrfconnect/ncs-example-application/commit/f9f2da24041a7b1923e49893cca912482c138aae
 .. _`sdk-zephyr west build patch`: https://github.com/nrfconnect/sdk-zephyr/blob/1a5d3b4a4ff98a33222856526afdf9c089b96d2b/scripts/west_commands/build.py#L585-L598
+.. _`sdk-nrf PR #15892`: https://github.com/nrfconnect/sdk-nrf/pull/15892
+.. _`sdk-nrf PR #14474`: https://github.com/nrfconnect/sdk-nrf/pull/14474
+.. _`sdk-nrf PR #16242`: https://github.com/nrfconnect/sdk-nrf/pull/16242
 
 .. |ncs_nrfxlib_repo| replace:: https://github.com/nrfconnect/sdk-nrfxlib
 .. _`sdk-nrfxlib`: https://github.com/nrfconnect/sdk-nrfxlib