remove debian experimental; it's a moving target anyway

Author: kkaefer

.github/workflows/clang-tidy.yml

@@ -8,14 +8,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        image: ["debian:bookworm", "debian:testing", "debian:experimental"]
+        image: ["debian:bookworm", "debian:testing"]
         include:
           - image: "debian:bookworm"
             clang: 15
           - image: "debian:testing"
             clang: 19
-          - image: "debian:experimental"
-            clang: 22
     container:
       image: ${{ matrix.image }}
       env:
@@ -33,7 +31,6 @@ jobs:
           apt-get install -yq \
             clang-${{ matrix.clang }} \
             clang-tidy-${{ matrix.clang }} \
-            libstdc++-12-dev \
             cmake \
             libprotobuf-dev \
             make \