.github: use clang/clang++ instead of clang-7/clang++-7

this prevent failures on build_ci.sh

.github/workflows/test_chibios.yml

@@ -71,8 +71,8 @@ jobs:
         shell: bash
         run: |
           if [[ ${{ matrix.toolchain }} == "chibios-clang" ]]; then
-            export CC=clang-7
-            export CXX=clang++-7
+            export CC=clang
+            export CXX=clang++
           fi
           PATH="/usr/lib/ccache:/opt/gcc-arm-none-eabi-${{matrix.gcc}}/bin:$PATH"
           PATH="/github/home/.local/bin:$PATH"

.github/workflows/test_linux_sbc.yml

@@ -73,8 +73,8 @@ jobs:
         shell: bash
         run: |
           if [[ ${{ matrix.toolchain }} == "clang" ]]; then
-            export CC=clang-7
-            export CXX=clang++-7
+            export CC=clang
+            export CXX=clang++
           fi
           PATH="/github/home/.local/bin:$PATH"
           Tools/scripts/build_ci.sh

.github/workflows/test_replay.yml

@@ -54,8 +54,8 @@ jobs:
         shell: bash
         run: |
           if [[ ${{ matrix.toolchain }} == "clang" ]]; then
-            export CC=clang-7
-            export CXX=clang++-7
+            export CC=clang
+            export CXX=clang++
           fi
           PATH="/github/home/.local/bin:$PATH"
           Tools/scripts/build_ci.sh

.github/workflows/test_sitl_copter.yml

@@ -49,8 +49,8 @@ jobs:
         shell: bash
         run: |
           if [[ ${{ matrix.toolchain }} == "clang" ]]; then
-            export CC=clang-7
-            export CXX=clang++-7
+            export CC=clang
+            export CXX=clang++
           fi
           PATH="/github/home/.local/bin:$PATH"
           ./waf configure --board sitl

.github/workflows/test_sitl_plane.yml

@@ -49,8 +49,8 @@ jobs:
         shell: bash
         run: |
           if [[ ${{ matrix.toolchain }} == "clang" ]]; then
-            export CC=clang-7
-            export CXX=clang++-7
+            export CC=clang
+            export CXX=clang++
           fi
           PATH="/github/home/.local/bin:$PATH"
           ./waf configure --board sitl

.github/workflows/test_sitl_rover.yml

@@ -49,8 +49,8 @@ jobs:
         shell: bash
         run: |
           if [[ ${{ matrix.toolchain }} == "clang" ]]; then
-            export CC=clang-7
-            export CXX=clang++-7
+            export CC=clang
+            export CXX=clang++
           fi
           PATH="/github/home/.local/bin:$PATH"
           ./waf configure --board sitl

.github/workflows/test_sitl_sub.yml

@@ -49,8 +49,8 @@ jobs:
         shell: bash
         run: |
           if [[ ${{ matrix.toolchain }} == "clang" ]]; then
-            export CC=clang-7
-            export CXX=clang++-7
+            export CC=clang
+            export CXX=clang++
           fi
           PATH="/github/home/.local/bin:$PATH"
           ./waf configure --board sitl

.github/workflows/test_sitl_tracker.yml

@@ -49,8 +49,8 @@ jobs:
         shell: bash
         run: |
           if [[ ${{ matrix.toolchain }} == "clang" ]]; then
-            export CC=clang-7
-            export CXX=clang++-7
+            export CC=clang
+            export CXX=clang++
           fi
           PATH="/github/home/.local/bin:$PATH"
           ./waf configure --board sitl

.github/workflows/test_unit_tests.yml

@@ -59,8 +59,8 @@ jobs:
         shell: 'script -q -e -c "bash {0}"'
         run: |
           if [[ ${{ matrix.toolchain }} == "clang" ]]; then
-            export CC=clang-7
-            export CXX=clang++-7
+            export CC=clang
+            export CXX=clang++
           fi
           PATH="/github/home/.local/bin:$PATH"
           Tools/scripts/build_ci.sh