Update versions for PHP 8 compatibility

Author: mmoll

.travis.yml

@@ -22,7 +22,7 @@ cache:
 before_script:
   - if [ "${DEPENDENCIES}" = "lowest" ]; then composer update --prefer-lowest --prefer-dist --no-interaction --no-progress; fi;
   - if [ "${DEPENDENCIES}" = "highest" ]; then composer update --prefer-dist --no-interaction --no-progress; fi;
-  - if [ "${DEPENDENCIES}" = "highest" ]; then pecl install -f ast-1.0.7; fi; # Install AST extension, as phan uses it
+  - if [ "${DEPENDENCIES}" = "highest" ]; then pecl install -f ast-1.0.10; fi; # Install AST extension, as phan uses it
   - export XMLLINT_INDENT="    "
 
 script:

composer.json

@@ -23,10 +23,10 @@
     },
     "require-dev": {
         "phan/phan": "^3.1.0",
-        "phpstan/phpstan": "^0.12.33",
-        "phpstan/phpstan-strict-rules": "^0.12",
+        "phpstan/phpstan": "^0.12.58",
+        "phpstan/phpstan-strict-rules": "^0.12.4",
         "phpunit/phpunit": "^7.0",
-        "vimeo/psalm": "^3.8"
+        "vimeo/psalm": "^4.0"
     },
     "require": {
         "php": "~7.2",