chore(l10n): update Slovak translations

Currently translated at 91.4% (118 of 129 strings)

Translation: Fossify/Calculator
Translate-URL: https://hosted.weblate.org/projects/fossify/calculator/sk/
Via: Weblate

Author: Qwey-lukac

app/src/main/res/values-sk/strings.xml

@@ -94,4 +94,28 @@
     <string name="unit_temperature_rankine">Stupeň Rankina</string>
     <string name="unit_temperature_kelvin">Kelvin</string>
     <string name="unit_mass_dram">Dram</string>
+    <string name="unit_speed">rýchlosť</string>
+    <string name="unit_speed_meter_per_second">Meter za sekundu</string>
+    <string name="unit_speed_kilometer_per_second">Kilometer za sekundu</string>
+    <string name="unit_speed_kilometer_per_hour">Kilometer za hodinu</string>
+    <string name="unit_speed_mile_per_hour">Míľa za hodinu</string>
+    <string name="unit_speed_speed_of_light">Rýchlosť svetla</string>
+    <string name="unit_pressure">tlak</string>
+    <string name="unit_pressure_bar">lišta</string>
+    <string name="unit_pressure_atmosphere">Atmosféra</string>
+    <string name="unit_energy">Energia</string>
+    <string name="unit_energy_megajoule">Megajoule</string>
+    <string name="unit_energy_calorie">Kalória</string>
+    <string name="unit_energy_kilocalorie">Kilo kalórie</string>
+    <string name="unit_energy_watt_hour">Watt hodina</string>
+    <string name="unit_energy_kilowatt_hour">Kilowatt hodina</string>
+    <string name="unit_energy_megawatt_hour">Megawatt hodina</string>
+    <string name="unit_energy_electronvolt">Electrovolt</string>
+    <string name="unit_speed_knot">Uzol</string>
+    <string name="unit_speed_foot_per_second">stopa za sekundu</string>
+    <string name="unit_pressure_pascal">Paskal</string>
+    <string name="unit_pressure_kilopascal">Kilopaskal</string>
+    <string name="unit_pressure_megapascal">Magepaskal</string>
+    <string name="unit_pressure_mmhg">Milimeter ortuti</string>
+    <string name="unit_energy_btu">Britská termálna jednotka</string>
 </resources>