ci: adds default warning flag about float conversions

.github/workflows/builds.yml

@@ -465,7 +465,7 @@ jobs:
           chmod 755 $HOME/.cargo/bin/cbindgen
           echo "$HOME/.cargo/bin" >> $GITHUB_PATH
       - run: ./autogen.sh
-      - run: CC="clang" CFLAGS="$DEFAULT_CFLAGS -Wshadow -fsanitize=address -fno-omit-frame-pointer" ./configure --enable-debug --enable-unittests --disable-shared --enable-rust-strict --enable-hiredis
+      - run: CC="clang" CFLAGS="$DEFAULT_CFLAGS -Wshadow -fsanitize=address -fno-omit-frame-pointer  -Wimplicit-int-float-conversion" ./configure --enable-debug --enable-unittests --disable-shared --enable-rust-strict --enable-hiredis
         env:
           LDFLAGS: "-fsanitize=address"
           ac_cv_func_realloc_0_nonnull: "yes"