add September high beta and pp ref runs + PbPb condition prior to 277473

Conditions/LHCb/Online/InteractionRegion.yml/275583

+# InteractionRegion for September high beta run
+# Run range: (275583, 276552)
+# Same conditions as for June VdM 
+# ```
+# InteractionRegion:
+#     position: <avg_position_x_y_z: [float x3]>
+#     spread: <spread_matrix_xx_xy_yy_xz_yz_zz: [float x6]>
+# ```
+---
+InteractionRegion:
+    position: [ "1.200338*mm", "1.648625*mm", "0.0*mm" ]
+    spread: [ "0.0064*mm2", "0.0*mm2", "0.0064*mm2", "0.0*mm2", "0.0*mm2", "2809.0*mm2" ]

Conditions/LHCb/Online/InteractionRegion.yml/276757

+# InteractionRegion for September pp reference run
+# Run range: (276757, 276766)
+# See https://lblogbook.cern.ch/HLT/370 
+# ```
+# InteractionRegion:
+#     position: <avg_position_x_y_z: [float x3]>
+#     spread: <spread_matrix_xx_xy_yy_xz_yz_zz: [float x6]>
+# ```
+---
+InteractionRegion:
+    position: [ "1.164*mm", "0.587*mm", "0.0*mm" ]
+    spread: [ "0.0064*mm2", "0.0*mm2", "0.0064*mm2", "0.0*mm2", "0.0*mm2", "2809.0*mm2" ]

Conditions/LHCb/Online/InteractionRegion.yml/277410

+# InteractionRegion for PbPb data before IR MR was merged
+# Run range: (277410, 277473)
+# See https://lblogbook.cern.ch/HLT/386 & https://lblogbook.cern.ch/HLT/388 
+# ```
+# InteractionRegion:
+#     position: <avg_position_x_y_z: [float x3]>
+#     spread: <spread_matrix_xx_xy_yy_xz_yz_zz: [float x6]>
+# ```
+---
+InteractionRegion:
+    position: [ "1.1*mm", "0.66*mm", "0.0*mm" ]
+    spread: [ "0.0064*mm2", "0.0*mm2", "0.0064*mm2", "0.0*mm2", "0.0*mm2", "2809.0*mm2" ]