chore: 7.0.0 release

Author: aokrushk

package.json

@@ -1,6 +1,6 @@
 {
   "name": "backoff-rxjs",
-  "version": "6.5.7",
+  "version": "7.0.0",
   "description": "A collection of helpful RxJS operators to deal with backoff strategies (like exponential backoff)",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
@@ -39,7 +39,7 @@
   },
   "homepage": "https://github.com/alex-okrushko/backoff-rxjs#readme",
   "peerDependencies": {
-    "rxjs": "^7.5.5"
+    "rxjs": "^7.0.0"
   },
   "devDependencies": {
     "@types/jest": "^28.1.0",