[openwrt/openwrt] CI: labeler: add sifiveu target

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch openwrt-23.05:
https://git.openwrt.org/55993f1fc13c415a4b5a70c69d5586421bad9073

commit 55993f1fc13c415a4b5a70c69d5586421bad9073
Author: Piotr Dymacz <pepe2k at gmail.com>
AuthorDate: Mon Jun 12 21:22:52 2023 +0200

    CI: labeler: add sifiveu target
    
    Add support for 'sifiveu' target and its specific packages in labeler.
    
    Signed-off-by: Piotr Dymacz <pepe2k at gmail.com>
    (cherry picked from commit 92b8b18c2685e9e509d2b8b797de7e03424d17d1)
---
 .github/labeler.yml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/.github/labeler.yml b/.github/labeler.yml
index 6303fdf7b7..6d53d58106 100644
--- a/.github/labeler.yml
+++ b/.github/labeler.yml
@@ -94,6 +94,10 @@
   - "target/linux/rockchip/**"
   - "package/boot/arm-trusted-firmware-rockchip/**"
   - "package/boot/uboot-rockchip/**"
+"target/sifiveu":
+  - "target/linux/sifiveu/**"
+  - "package/boot/uboot-sifiveu/**"
+  - "package/boot/opensbi/**"
 "target/sunxi":
   - "target/linux/sunxi/**"
   - "package/boot/arm-trusted-firmware-sunxi/**"