Fix yamllint errors: trailing spaces, blank lines and newline at end of file

Allow aligned values after a colon (the bedroom lamp presets).

.yamllint.yml

@@ -25,3 +25,7 @@ rules:
 
   comments:
     require-starting-space: false
+
+  # Aligned values (e.g. the bedroom lamp presets) are intentional
+  colons:
+    max-spaces-after: -1

common/sensor/uptime.yaml

@@ -7,4 +7,3 @@ accuracy_decimals: 2
 update_interval: 60s
 filters:
   - lambda: return x / 86400;
-

mcu-pow-dishwasher.yaml

@@ -199,4 +199,3 @@ switch:
       - delay: 500ms
       - switch.turn_off: relay_off # bi-stable relay so no need to keep on
     interlock: [relay_on]
-

mcu-shed.yaml

@@ -121,4 +121,3 @@ switch:
     pin:
       number: 19
       mode: OUTPUT
-

mcu-well.yaml

@@ -370,4 +370,3 @@ valve:
       - switch.turn_on: irrigation_relay_8
     close_action:
       - switch.turn_off: irrigation_relay_8
-