Work around a problem with incompatible unixodbc-dev package

The package already installed on the system results in build errors when
trying to use it:

In file included from /usr/include/sql.h:19:0,
                 from /usr/include/sqlext.h:43,
                 from /home/runner/work/soci/soci/include/soci/odbc/soci-odbc.h:25,
                 from /home/runner/work/soci/soci/src/backends/odbc/factory.cpp:9:
/usr/include/sqltypes.h:56:10: fatal error: unixodbc.h: No such file or directory
 #include "unixodbc.h"
          ^~~~~~~~~~~~

so remove it before installing the Debian version.

See microsoft/linux-package-repositories#36

scripts/ci/install_odbc.sh

@@ -5,6 +5,12 @@
 #
 source ${SOCI_SOURCE_DIR}/scripts/ci/common.sh
 
+# Remove buggy versions of the packages from Microsoft repositories as well as
+# their dependencies.
+run_apt remove \
+    libodbc1 odbcinst1debian2 \
+    unixodbc unixodbc-dev
+
 run_apt install \
     tar bzip2 \
     unixodbc unixodbc-dev \