By Uditha Jayasinghe and Devjyot Ghoshal COLOMBO (Reuters) -Sri Lankan President Gotabaya Rajapaksa dropped his brother as finance minister and sought a new central bank governor on Monday, as crowds angry over the country’s deepening economic crisis surrounded the homes of several lawmakers. The debt-laden country, run by Rajapaksa and members of his family since 2019, is struggling to pay for imports of fuel and other goods due to a scarcity of foreign exchange, leading to hours-long power cuts and a shortage of essentials. Police used tear gas to disperse hundreds of protesters who gathered…