Update to LCG_106a_ATLAS_1, atlasexternals 2.1.28, tdaq/tdaq-common 11-04-00

This MR updates the externals version to (SPI-2660):

• LCG_106a_ATLAS_1, that ships ROOT 6.32/06, boost 1.86 and several other updates listed at https://lcginfo.cern.ch/compare_releases/None/106a_ATLAS_1/106_ATLAS_13
• tdaq and tdaq-common 11-04-00 compiled against LCG_106a
• atlasexternals 2.1.28 that updates AnalyisBaseExternals to some of the equivalent version in LCG_106a

Keeping this MR in draft mode until tdaq and tdaq-common 11-04-00 and atlasexternals 2.1.28 have actually been tagged.

Tagging @rhauser, @akraszna, @ewelina, @jcatmore, @jchapman for info