Try adding Gemfile.lock

Gemfile.lock

@@ -0,0 +1,86 @@
+PATH
+  remote: .
+  specs:
+    omniauth-microsoft_graph (2.0.0)
+      jwt (~> 2.0)
+      omniauth (~> 2.0)
+      omniauth-oauth2 (~> 1.8.0)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    base64 (0.2.0)
+    bigdecimal (3.1.8)
+    diff-lcs (1.5.1)
+    faraday (2.9.0)
+      faraday-net_http (>= 2.0, < 3.2)
+    faraday-net_http (3.1.0)
+      net-http
+    hashie (5.0.0)
+    jwt (2.8.1)
+      base64
+    metaclass (0.0.4)
+    mocha (0.14.0)
+      metaclass (~> 0.0.1)
+    multi_xml (0.7.1)
+      bigdecimal (~> 3.1)
+    mustermann (2.0.2)
+      ruby2_keywords (~> 0.0.1)
+    net-http (0.4.1)
+      uri
+    oauth2 (2.0.9)
+      faraday (>= 0.17.3, < 3.0)
+      jwt (>= 1.0, < 3.0)
+      multi_xml (~> 0.5)
+      rack (>= 1.2, < 4)
+      snaky_hash (~> 2.0)
+      version_gem (~> 1.1)
+    omniauth (2.1.2)
+      hashie (>= 3.4.6)
+      rack (>= 2.2.3)
+      rack-protection
+    omniauth-oauth2 (1.8.0)
+      oauth2 (>= 1.4, < 3)
+      omniauth (~> 2.0)
+    rack (2.2.9)
+    rack-protection (2.2.4)
+      rack
+    rake (12.3.3)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.0)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.1)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.4)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.4)
+      tilt (~> 2.0)
+    snaky_hash (2.0.1)
+      hashie
+      version_gem (~> 1.1, >= 1.1.1)
+    tilt (2.3.0)
+    uri (0.13.0)
+    version_gem (1.1.4)
+
+PLATFORMS
+  arm64-darwin-23
+
+DEPENDENCIES
+  mocha (~> 0)
+  omniauth-microsoft_graph!
+  rake (~> 12.3.3, >= 12.3.3)
+  rspec (~> 3.6)
+  sinatra (~> 2.2)
+
+BUNDLED WITH
+   2.4.21